I managed to fix it using a version that is neither too old nor too new. I downloaded version 5.0.0.1888.
You uninstall your current version and clean it using IObit or any other uninstaller. Then you install version 5 with the crack that is available above for download.
After downloading, open the folder of the installed version and remove the following files:
push_detect.exe
ttdaemon.exe
vecrashhandler.exe
vedetector.exe
Then go to the apps folder and open the CONFIGURE.ini file, and put 1.0.0.0 in front of last version.
After that, delete the Productinfo.xml file and create a new one with the same name and with .xml at the end — don’t forget this.
Once that’s done, open the program and log in (IMPORTANT: DELETE THE USER DURING UNINSTALLATION).
Then log in normally to your account. You can favorite your Pro effects that you use, and use effects like Optical Flow and the quality enhancer before applying the file crack.
Whenever you want to use a Pro effect that isn’t available with the crack activated, you just deactivate it, open CapCut, choose the filter, and do everything you need. After that, apply the crack that iosdevice provides, and you’ll be able to use it for free.
Hope this helped.