I created a simple FMX app in Delphi 11.3, added the iCloudDocument component to the main form, hooked up OnInitialize to call LoadDocuments when ASuccess=True (which is it). I can send a sample of this code if you need it, but it's the absolute minimum required to initiate LoadDocuments.
This raises an EIntOverflow exception in FMX.TMSNativeiCloud.
My entitlements are set up correctly in the entitlements file for the project to enable iCloud and has the correct container details. I've traced through your sources and can confirm that it's found a valid container path.
I'm using the latest 4.1.0.1 version of TMS iCL components. My IDE has imported iPhoneOS 16.4.
I just paid for an update from v3 to see if there is a fix but still seems to crash.
Do you have any advice, or could you look into this ASAP please?