Hello Erik,
Apologies for the delayed response
Desktop:
Sign in to the AxCrypt app with different email addresses/AxCrypt accounts, Please try to clear the AxCrypt local contents by using the AxCrypt file menu File | Options | Clear All Settings & Restart or clicking the switch user button in the sign in dialog.
Now Sign in to the AxCrypt app with your AxCrypt credentials. Start AxCrypting……
Mobile app: you can change the email address on the AxCrypt mobile login page. please clear/remove the old email address that you enter, then enter the new email address.
If you are asking any Queries, please write us at support@axcrypt.net.