I have the APK of the last good version of ROM Toolbox Pro, which had the app manager, and so far I've had to disable auto update to prevent it from being replaced by the newer version.
This is an app I purchased back in the day when it didn't have its features truncated, so deleting it from my play store library isn't an option. I've tried the Magisk detach module, but that messed up play store and I had to reset my phone.
How does one manually delink the app? The phone is obviously rooted, using Magisk systemless root.