Seat Belt Cert Questions

I have a set of RJS belts. 5 point.
They "expired" 12/2023.
They were 6 months in when I got them from Summit.

Questions:
Send them to RJS and get them tested and new tags?
Buy new ones?
How do I make sure I get the most time if I buy new ones?

I am all about safety, but this sounds like a racket.
Mine are perfect.