In my case the uninstall could not remove the files. The command line remove did not work either. In the end I went through the registry and removed any reference to the dokan files and rebooted. After this the uninstaller removed the software. Then I reinstalled Dokany and then cryptomator and all is good.
As far as I can tell something was locking the dokan1.dll file preventing the uninstaller from removing it. so every time I tried to uninstall it it failed and rolled back.