licence pricing for 2 years

when I open update optinos, it says, that the licence for 2 year is approx 6.50$
when i get to checkout the price says 12€ ?

why ?

Old BTT versions included an approximate static price, which was valid when that version of BTT was released. I have removed that quite a while ago - possibly you haven't updated for a longer time period.

However I think you have a license that was valid until June 22, the previous stable release should be compatible with that: (