Aye I noticed my mistake in seconds of posting and completely changed all passwords.
Guess I'll just wait it out... Odd as creating a server using the ingame client shows up in server browser.
EDIT: I'm wondering if the image I've linked below is part of the reason I'm not appearing in sever lists, seems I'm not connected to Steam servers.
EDIT 2: Also noticing my server randomly attempting to connect to various valve servers in the background and getting 0 response:
ubuntu@ip-172-31-25-33:/servers/geserver/gesource/addons/sourcemod/configs$ sudo tcpdump -i any portrange 20000-30000
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on any, link-type LINUX_SLL (Linux cooked), capture size 262144 bytes
23:46:41.808399 IP ip-172-31-25-33.eu-west-2.compute.internal.59874 > 103.28.54.10.27019: Flags [S], seq 2567304607, win 26883, options [mss 8961,sackOK,TS val 84664579 ecr 0,nop,wscale 2], length 0
23:47:14.832394 IP ip-172-31-25-33.eu-west-2.compute.internal.59874 > 103.28.54.10.27019: Flags [S], seq 2567304607, win 26883, options [mss 8961,sackOK,TS val 84697605 ecr 0,nop,wscale 2], length 0
23:48:25.384362 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > cm-04.lux.valve.net.27018: UDP, length 36
23:48:25.384862 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > 208-64-200-205.steampowered.com.27019: UDP, len gth 36
23:48:25.384905 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > pcroot02.fra-1.srcds.valve.net.27019: UDP, leng th 36
23:48:25.384921 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > 103-10-125-17.valve.net.27018: UDP, length 36
23:48:25.434400 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > 146-66-156-8.valve.net.27020: UDP, length 36
23:48:25.434438 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > 146-66-156-9.valve.net.27020: UDP, length 36
23:48:25.434458 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > 146-66-155-9.valve.net.27017: UDP, length 36
23:48:25.434474 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > cm-04.lux.valve.net.27017: UDP, length 36
23:48:25.533651 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > 208-64-200-201.steampowered.com.27020: UDP, len gth 36
23:48:25.533691 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > 81.171.115.8.27017: UDP, length 36
23:48:25.732694 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > 103.28.54.11.27018: UDP, length 36
23:48:25.832461 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > 164-78-208-9.valve.net.27018: UDP, length 36
23:48:25.832498 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > cm-02.lux.valve.net.27018: UDP, length 36
23:48:25.832525 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > 103-10-125-17.valve.net.27020: UDP, length 36
23:48:25.832555 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > pcroot02.fra-1.srcds.valve.net.27017: UDP, leng th 36
23:48:25.981668 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > 146-66-156-11.valve.net.27019: UDP, length 36
23:48:26.031479 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > unknown.hwng.net.27017: UDP, length 36
23:48:26.130520 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > 146-66-155-8.valve.net.27018: UDP, length 36
23:48:26.428622 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > 164-78-208-14.valve.net.27018: UDP, length 36
23:48:26.676817 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > cm-03.lux.valve.net.27018: UDP, length 36
23:48:26.676856 IP ip-172-31-25-33.eu-west-2.compute.internal.26901 > cm-03.lux.valve.net.27019: UDP, length 36
23:48:34.403236 IP ip-172-31-25-33.eu-west-2.compute.internal.41866 > cm-04.lux.valve.net.27018: Flags [S], seq 17059 695, win 26883, options [mss 8961,sackOK,TS val 3927230435 ecr 0,nop,wscale 2], length 0
23:48:35.408357 IP ip-172-31-25-33.eu-west-2.compute.internal.41866 > cm-04.lux.valve.net.27018: Flags [S], seq 17059 695, win 26883, options [mss 8961,sackOK,TS val 3927231440 ecr 0,nop,wscale 2], length 0
23:48:37.424371 IP ip-172-31-25-33.eu-west-2.compute.internal.41866 > cm-04.lux.valve.net.27018: Flags [S], seq 17059 695, win 26883, options [mss 8961,sackOK,TS val 3927233456 ecr 0,nop,wscale 2], length 0
23:48:41.616387 IP ip-172-31-25-33.eu-west-2.compute.internal.41866 > cm-04.lux.valve.net.27018: Flags [S], seq 17059 695, win 26883, options [mss 8961,sackOK,TS val 3927237648 ecr 0,nop,wscale 2], length 0
23:48:49.808358 IP ip-172-31-25-33.eu-west-2.compute.internal.41866 > cm-04.lux.valve.net.27018: Flags [S], seq 17059 695, win 26883, options [mss 8961,sackOK,TS val 3927245841 ecr 0,nop,wscale 2], length 0
23:49:05.936380 IP ip-172-31-25-33.eu-west-2.compute.internal.41866 > cm-04.lux.valve.net.27018: Flags [S], seq 17059 695, win 26883, options [mss 8961,sackOK,TS val 3927261970 ecr 0,nop,wscale 2], length 0
23:49:38.192385 IP ip-172-31-25-33.eu-west-2.compute.internal.41866 > cm-04.lux.valve.net.27018: Flags [S], seq 17059 695, win 26883, options [mss 8961,sackOK,TS val 3927294227 ecr 0,nop,wscale 2], length 0
23:50:57.773607 IP ip-172-31-25-33.eu-west-2.compute.internal.42386 > 208-64-200-205.steampowered.com.27019: Flags [S], seq 878349032, win 26883, options [mss 8961,sackOK,TS val 1879273077 ecr 0,nop,wscale 2], length 0
23:50:58.800397 IP ip-172-31-25-33.eu-west-2.compute.internal.42386 > 208-64-200-205.steampowered.com.27019: Flags [S], seq 878349032, win 26883, options [mss 8961,sackOK,TS val 1879274104 ecr 0,nop,wscale 2], length 0
23:51:00.816408 IP ip-172-31-25-33.eu-west-2.compute.internal.42386 > 208-64-200-205.steampowered.com.27019: Flags [S], seq 878349032, win 26883, options [mss 8961,sackOK,TS val 1879276120 ecr 0,nop,wscale 2], length 0
23:51:04.976383 IP ip-172-31-25-33.eu-west-2.compute.internal.42386 > 208-64-200-205.steampowered.com.27019: Flags [S], seq 878349032, win 26883, options [mss 8961,sackOK,TS val 1879280280 ecr 0,nop,wscale 2], length 0
23:51:13.168379 IP ip-172-31-25-33.eu-west-2.compute.internal.42386 > 208-64-200-205.steampowered.com.27019: Flags [S], seq 878349032, win 26883, options [mss 8961,sackOK,TS val 1879288472 ecr 0,nop,wscale 2], length 0
23:51:29.296412 IP ip-172-31-25-33.eu-west-2.compute.internal.42386 > 208-64-200-205.steampowered.com.27019: Flags [S], seq 878349032, win 26883, options [mss 8961,sackOK,TS val 1879304601 ecr 0,nop,wscale 2], length 0
23:52:01.552363 IP ip-172-31-25-33.eu-west-2.compute.internal.42386 > 208-64-200-205.steampowered.com.27019: Flags [S], seq 878349032, win 26883, options [mss 8961,sackOK,TS val 1879336859 ecr 0,nop,wscale 2], length 0
^C
43 packets captured
128 packets received by filter
85 packets dropped by kernel