I'm one of the affected users of scenarios 3 and 4. I'm based in the UK and I'm backing Kay at the Mystery Character of the Month Club, which is £5.
When trying to redeem the yearly pack on Itch, after successfully connecting my Patreon account, I get this message:
I'm pretty sure the currency conversion into Euros is incorrect, but regardless both £5 and €7.49 are more than $5.00.