Hi y’all, I love this app and have been on every phone I owned since 2008.
All widgets disappeared from my One Plus 8 at the same time as the v6.600 K-9 Mail update. I’m on Android 13.
I searched Google and this forum and didn’t find anything relevant. I don’t have an SD card so that’s not an issue.
I’m guessing that’s an A/OOS 13 issue then. My OP 8P is still on OOS 11, k-9 updated to 6.600 and my widgets are still there 
My widgets also vanished with the 6.600 update. The only widget I can put back now is the ugly K9 icon that doesn’t tell you how many unread messages you have.
Using a Samsung S10+, Android 12, One UI 4.1.
a data point: on a pixel 6a running android 14 beta-1 i am seeing the same 2 widgets and 1 shortcut that @Nimueh has in his screenshot above - both before and after updating k9 from 6.5x to 6.6. i don’t normally use them, but configured the “envelope” one, which gives the unread count, before the update and it was still there, still showing the (accurate) count, after.
Exactly the same Problem here
Same issue on galaxy a32, android 13.
I see there is version 6.601 available which according to release notes reverted changes to widget code
6.601 fixed it for me!
Could you please mark it as solution that others also see that this issue is fixed?
My 4 widget envelopes (for 4 different mail accounts) are also gone after the update but I could manually re-create the widgets on my home screen since all mail account settings have been kept. And then they worked again.
(Galaxy S20FE, Android 13)
See 2 comments above, the widget issue was solved in version 6.601.
