I've been having an issue for a while where the custom plates that I have won't appear as an option in ls customs, the private plate option has disappeared.
I contacted Rockstar Games and they weren't able to help.
I have done a full reset of in game settings and I have reset the Ifruit app but nothing has fixed it unfortunately.
I am able to order plates via Ifruit and process the order but I prefer going to LS customs in game and getting the plates.