I have a problem with the UEFN.

I changed a setting in the UEFN. I went to “Setting” top right > “Preview Rendering Level” > and checked “Android ES _1”. Since when I launch the editor I can no longer interact with it. As the screen is frozen and I no longer modify the parameter. I would have to check ”Disable Preview” instead of “Android ES _1”. How to do ?
Thank you for your reply.