It is not related from upgrading from 0.48 to 0.49. (Very minor update that didn't touch anything related)
Basically it is doing "checks" (instance online, JWT works, banned, etc) Looks like it got somehow stuck each time on a check. Which account(s) is this happening to?
You can get the logs but its a bit complicated. see https://github.com/dessalines/jerboa/issues/new?assignees=&labels=bug%2Ctriage&projects=&template=bug_report.yaml then How to get the full logs
Does a popup appear? like instance offline, etc, account banned, etc
Version, android version, device?