Firefox on iPad crashes and is very slow

Hey, Since I've updated my ipad to the newest os (15.7) my Firefox got really slow and buggy. Often it simply crashes once it's loading a page. I am not be able to use my enpass password manager anymore too... It simply won't show the keyboard once I want to log into anything. A look in the reviews section of the app store shows me I am not alone. What's going on? I am using Firefox on so many devices but not on my ipad it's just not usable anymore. Thanks in advance for help .