Hi this is definitely a scam - please see below, this is a tech support scam. It's caused by some adware/malware on your computer. Since you ran Malwarebytes you may need to use a different system like Spybot Search and Destroy
https://www.safer-networking.org/
Please download this and do a scan. You can also try closing your Microsoft Edge and restarting it.
DISCLAIMER: In this post are linked some non-Microsoft websites and there may be ads on the pages for products & services including products frequently classified as a PUP (Potentially Unwanted Product). Please thoroughly research any product / service advertised on the pages before you decide to use them. Your discretion is very much advised.
Please let me know if this helped somehow.