Ribbon at top not Visible and unable to move the application to different screen

[Tiffany Wong]

I believe I must have pressed something, the ribbon has disappeared from this afternoon, unable to locate the ribbon, unable to move the app from screen 1 to 2, unable to find x.   Tried repair the application, no go, setting back to default, no go. 

Please assist urgently.  The application version is 13.43.3.855.       

Thank you. 

[Leslie V]

Hello Tiffany,

Thanks for reaching out to us!

Please use the tool I have provided below to remove all files associated with Nitro Pro and reboot your system.
https://downloads.gonitro.com/professional_13.50.4.1013/install-cleanup/install-cleanup.zip

NOTE: This clean-up tool will erase any existing signature files within Nitro, so please save them to another location before using the clean-up tool in order to keep them. 
Please see this link for backing up custom stamps/signatures: https://kb.gonitro.com/knowledgebase#/search/stamps/000004307

When your system is back up, close all your open applications and install Nitro Pro 13.50.4.1013 from the page I have provided below:
https://www.gonitro.com/nps/product-details/downloads

I hope this helps! Please let me know how that goes.