When I did it I tweeted at them saying this is for opensea verification, with a link to my collection. They made a tweet the other day saying they weren't doing verification anymore then in the comments said they were processing applications, tbh I found it very confusing so maybe join their discord and ask. : https://discord.gg/Y32kEp7NYn

they still have a room called collection approvals but people are just dropping links saying pls verify me