You can hop into the official Session community (join the community in Session).
Alternatively, you can submit a ticket at the bottom of this article to reach out to our support team.
For the best possible troubleshooting, you can include a debug log from your Session app. You can do this by going to the Settings menu on your device and tapping/clicking 'Export Logs' to generate a log. This will create a log file that you can share with our team in the ticket that you open.