Does not detect partial connectivity to messaging apps (signal, etc) on United airlines free wifi

[gidoBOSSftw5731]

Describe the bug

United airlines provides a free wifi tier that allows for access to messaging apps like imessage, rcs, signal, and more. While messages and pictures can be sent to/from these apps, larger files are blocked (at least in signal.) Ooni probe doesn't detect any connectivity to signal at all.

To Reproduce

• board united airlines plane
• connect to WiFi and select free messaging tier (this is only technically allowed on phones, so you have to use your browser's devtools to emulate a phone)
• run scan, see that all probes fail, even though messaging is available in some capacity.

Expected behavior

• At least some connectivity is available since messages can be sent

Screenshots

If applicable, add screenshots to help explain your problem.

System information (please complete the following information):

• Device: Pixel 7
  • OS: Android 13, August update
  • OONI Probe version: 3.8.3

Additional context

If instructions are provided within the next few hours, I can run further tests.

[Lanius-collaris]

Try opening log?

[gidoBOSSftw5731]

Logs were not generated

[Lanius-collaris]

It seems to me OONI probe can't connect to OONI backend.