Hi there. I'm having a problem with the wallet. I've sent 500 XLC to another wallet, and it showed the error "Mixin too big" (or something like that). I lowered the anonimity level and resent and now it just shows a question mark and the transaction never leaves the wallet. I've made another 2 transfers, of 500 and 950 XLC, and the same error appears. How to solve it?