After my last app update in March 2023, all of my offline maps disappeared! I had bought them and performed the required renewals as soon as I was asked to. How can this be possible?
What exactly are the maps LoMaps or ??
Update ? What version did you have before. Which one do you have now.
Which phone, which Android ?
https://help.locusmap.eu/topic/30937-maps-vanished-and-error-12569-on-downloading
perhaps this is similar to your problem
menion describe how to solve it for now