was working fine when I installed yesterday. Just updated to the most recent testflight beta, and my existing accounts have disappeared, with no apparent way to re-add. Suspect this is an issue with the newest release. Presumably will be resolved in next release.

Edit: have submitted an error report on testflight. Reverting to the previous build in testflight brings back the ‘+’ button to add accounts. Previously added accounts were deleted when the most recent update was installed, and reverting does not bring them back automatically.