They're "retiring" the rewards system, see this
FAQ. FH5 doesn't use it and the rewards for other games will stop in mid-2022.
Technically, the servers have been down on FH2 and FM6 for weeks, and dont seem likely to be restored (support queries are shut down with a standard response) and FM5 servers are gone as of last week.
So the only rewards you can actually get now are on FM7, FH3 and FH4, up to mid 2022.
Unless one of the others comes back online. However, I am assuming that due to the need to source servers for the number of people using FH5 (and FH4), that any change to other games is unlikely before then.
I can understand and accept to an extent why the need has arisen - after all it is unreasonable to expect servers for old games to stay up forever. And it's much better that the new game has stable online. Erm, well it doesn't yet but it might have at some point 😂
Incidentally if you have bought paid DLC on FM6, there are posts on the official forum suggesting that you cannot use this as the game just redirects you to the Store which says you already own the content. Not sure how that one falls legally 🤔
But for FH5 onwards, the rewards system is gone. But has been replaced by the cars gifted when you begin the game. Erm, gifted when you reboot the game. Erm, apart from the McLaren P1 which isn't working currently.... 😂
I wish the only "bugs" in this game were the Vochos driving around the map...