Board Thread:Support Requests - Getting Technical/@comment-46091810-20200924235308/@comment-9605025-20200925193002

Well, you can contact staff as GarfieldTC said. There are two likely scenarios: If the first case, they should be able to verify the mistake and stop blocking you. If the latter, it will be much harder to convince them to unblock your IP; but not entirely impossible.
 * 1) They tried blocking someone and accidentally blocked your IP
 * 2) Someone who has used your home network (either recently or in the past) is responsible for serious/repeated vandalism so Fandom is intentionally blocking your IP