I have tried to back to UM 1.3.88, restore all file of my website and also MySQL database, but sadly it didn’t work. When I activate the UM 1.3.88 my site getting errors, I can’t access admin panel also the site not load properly from the frontend.
I really desperate for this, it seems like the UM 2.0.X injected something into my site which makes it unable to go back to the previous version.