A family of Microsoft word processing software products for creating web, email, and print documents.
All,
I have contacted Grammarly and they have come back to me with the news that they have been able to replicate the behavior and have submitted the case to their developers. They have also stated that it might take a little bit of time to get it fixed. In the meantime, for those who cannot live without it, there is a Grammarly application called 'Grammarly for Microsoft Office' that is actually working (I have tested it myself and seems to be working all right). The other temporary action you may take short of uninstalling the app is to disable it by clicking on its logo and selecting the Options button, and then clicking 'Turn off suggestions in...'.
Hope all helps until a permanent fix is available.