Did you check that you physically had one remote pass left after the raid? We can hold up to 3 at a time, so see if it actually uses more than one up. It may ask for a second pass but it won't use it up, but yea that's broken if you already have one left and it's like forcing you to buy another, you could email for free pass, they've given remotes to ppl
Zekrom is the new best electric type, managed to get a fundo Reshiram but not much luck for Zekrom atm