Forza horizon 5

I just started the game and after doing the entry drives ek selecting the caracter o was ask to choose between 3 cars and after selecting one it wil ask to aplly a number plate and just there is my problem i have entered the number plate i want and selected apply and tgen is is stuck on please wait applying what is the problem and how can i fix it i did uninstall the game and reinstalled it cleared the cache what can i do next

Welcome to FH5

Some numbers or even names have been banned in Forza Horizon 5 (for example 420 or Brandon). So I would google the number or the name you choose if there were maybe somewhat different meanings for that specific combination of signs.