We have added few changes in bookmarks to support new features like custom icons for upcoming releases. But, in older versions of Android, a crash occurs if the number of bookmarks exceeds 512. This is not a common and unexpected bug that we could not predict in advance.
We have released a new update 9.4.6 with the crash fix. Please update the app via Google Play.
If this issue persists, let us know.
* After updating to the new version, you can uninstall the beta version (if you installed it following our previous recommendation) from your device;
* If you transferred the app or downloaded maps to an SD card, then the maps and bookmarks will be deleted when the beta is uninstalled. You can back up the maps and bookmarks in advance from [the app folder](https://support.maps.me/hc/en-us/articles/208458855).