Hi
Welcome to the forum, and thanks so much for your report!
Please clear the Kinsta cache and see if it solves the issue. It is possible that the admin styles were also cached and there was some change there.
Please test it again in an incognito tab. If nothing works, please send temporary login credentials and a link to this thread to help@bricksbuilder.io using the email address you used during the purchase.
Please manually change the script to avoid the memory issue. (I am sorry that I am not allowed to use the Theme Editor so kindly change the code following that thread)