I upgraded my project from Mendix 5.21.4 to Mendix 6.5.1 because the Sandbox functionality would disappear as of June 1st for Mendix 5 apps. However, when I run my project in the new 'Free App' I can't login anymore (not even with MxAdmin) as it says that username and/or password is incorrect. I double checked the username and password of the administrator in the project security, but it doesn't work.
The free app runs on the mxapps.io domain. Don't know if this is normal.
Does anyone know how I can fix this?