dizwa Hey, for the first issue, those URLs are related to Ezoic script, you do not want these to be indexed. Google has crawled these URLs and decided not to index them (which is expected behaviour) because they are not content related pages.
For the second issue, I've just navigated around the site via a mobile device and I am not experiencing any issues with the 3 usability errors being flagged by Google. I've also just ran Google's mobile friendly test and no issues have been flagged, as you can see below. I tested a few different URLs and each result was positive. Is there an option in GSC to rerun the check?