If you were using the sonarr/radarr and have them recovered then you can check them, they should show you what torrent they pulled

the megathread has what your looking for

At least on Firefox Android you can install the extension with no issue. BPC also has some options for iOS users listed, cant say how well they work as i cant try them.

If all you care about is bypassing the paywalls then i suggest using BPC, its completly seamless. If you dont want do install an extension then you can use archive.today. The site you linked is probably safe but why use something unkown when there are trusted alternatives.

the tags section is what i was referring to, i remember seeing it when i set up my indexers and assumed it was able to do that. after playing around with it, i dont think its what you are looking for

Iirc you can add tags to specific trackers in prowlarr (i think sonarr and radarr too, but im not sure) and they might do what you need. But you can also set seedtime/minimum ratio per tracker in prowlarr, thats what i do