Can not use Alt - C in in android phone and mac laptop I bought a Samsung galaxy a71 recently then I installed an app called alt-c in my phone and my MacBook air and it works fine, but the app can not copy text from my own  phone to my mac and a message appears in my phone and it says:

Alt-c could not paste text to pc: make sure you copied the text on your device.

and a notification appears in my mac and it says:

there was no text in the device's clipboard.

so anyone has a solution for that?
Probably this answer is long overdue. But maybe it might help someone else in the future.
Had the same problem and it seems that since Android 10 apps can only access the clipboard if they are in the foreground. So the only way for the copy to work from Phone to Mac is to open the app on your phone after you've copied the text, and then paste on the Mac.