Fan-ID website has exerpts from the relevant laws:
FAN ID is a document for sporting event spectators issued by a federal…
Spectators of sporting events are defined as persons possessing an entrance ticket for a match or a document in a form set forth by the government of the Russian Federation that entitles them to obtain an entrance ticket for a match.
I checked the law itself (in Russian): it does indeed say that. So technically whether or not you actually attend a match has no bearing on your legal status as a spectator.
Credit:stackoverflow.com‘