You are running Mocha in learning edition (LE) mode. In LE mode, exports are limited to 10 frames and renders have watermarks on them. LE mode exists so that you can continue to learn Mocha even after your 15-day trial has expired.
If you are running on a floating license and you see that you are running in LE mode, all your licenses have been checked out or there is a communication issue with the server. Check the user guide for troubleshooting tips on floating licenses.
If you have been working on a file on a node-locked license and you lose your license to another user, do not save your file in LE mode.
If you have saved your file, you will have to send it to our support team to be unlocked. Be advised, it may take anywhere from 24-72 hours to unlock your LE mode files (subject to review of your license), if we are able to unlock the file at all. We will not unlock more than one file per user.