Achievement rewards that reward cards are buggy

I am stuck trying to farm Brealeos and Aporas for what is an absurdly low drop rate for the cards because the achievement Hot and Cold (Brealeos) and Resort Site (Aporas) didn’t reward their appropriate cards as part of the achievement reward.

Brealeos isn’t a particularly rewarding T3 field boss, I’d prefer to farm one of the better T3 field bosses but I need the card for my support alts. Oblivion Island spawns something like 2 days a week.

Is there a way we can acquire the cards that haven’t been rewarded by completed achievements?