Pro is the paid part of GED-VIEW: exporting, editing, the File editor and the tools that write a new file (Privatize living people, Repair file and Anonymize stay free). Viewing your file is free and stays free.
Everything here is free for a limited time.
Reloading usually fixes this. Your files and drafts are saved in this browser and will still be there. If reloading does not help, copy the details and paste them into the support form at /support.