Can't Add Asset To Project Even Though It Says It Should Be Compatible

I recently purchased this asset from the marketplace and have contacted the creator as well.
Victorian Room

The asset says it’s compatible all the way up to 4.21 but I have 4.21.2 installed so it seems that it doesn’t recognize this as a valid version. If I try to install 4.21 it’s not listed in the available versions because I technically have it installed. What is thew best way to get this into my 4.21.2 project? I’m worried that if I install any version of the engine that is beyond the “.0” release this asset won’t be allowed to “Add To Project”.

I get the same problem. Any knowed fix would be appreciated.