Payflex

So I am new to payflex been struggling to obtain a spending limit for a few month's, eventually I into my payflex app and I saw that they approved me a certain amount whenever I tried purchasing something it kept that I do not qualify which made me contact payflex via email(cause when you phone their number there is never a agent available)after emailing them they increased my spending limit yet one still can not purchase because apparently I have insufficient funds even though the app says other wise and ontop of that payflex asked for a 6 month statement