What a pain in the ass and very little actual instruction

Someone just illegally transferred my 0.099 ETH from my MetaMask Wallet to 0x532951294BCF47377c49dd5AF2D8dB86ccaBA517 without my authorisation. How Can I reverse this?

https://etherscan.io/tx/0x4d6b9a5d2e45162952339bf9a00a8707ad6143eb1ef802fcb7471635316659b7
https://etherscan.io/block/4975893

Extension reports as corrupt when attempting to install. Fix this.

Umnable to install MetaMask using Firefox browser on Mac OS 10.13.1. Error message saying the file is corrupt.

second time i open firefox, metamask isnt logged in. Had to import existing DEN using my 100% correct seed which fails every time. No support from the devs, really dissapointed.

I have tried installing on Firefox on Windows 10 system and it won't install claiming the extension is corrupt. I doubt the extension is corrupt as others are able to install. Might be my OS. Still, I can't give higher stars to something I have yet to be able to use.

YOu cant import a new account when i choose file the window closes so fix that