These are false positives as usual from Microsoft, it's triggered by the settings backup to migrate your settings between updates to make it easier for the user, either way it's been changed for the next release but leaving a 1 star review for that is just unnecessary.
You should be asking in the forum not here but it's your browser that is the issue. Either use the Extensions Manager app, use another browser or rename the file from .zip to .mpe1
It's also a very stylish skin, without going overboard with flashy animations or other unnecessary stuff. As I'm writing this review, I'm using version 220.127.116.11. I'm sure the upcoming versions will be even better.