Are you sure It has nothing to do with the fees or the account limits ?? as far as I know you will have to adjust the amount.
Are you trying to tell me Wirex charges $10-$20 to complete a simple load transaction, and where are these owners, no one responds to my tickets and no one responds here, this is the same shit that happened with coinizy for a few months, they steal your money and a new owner returns with a new design while we all get screwed, If I could find enough people who got screwed by this company we could open a scam Accusation and they might respond faster.
Don't throw that work so fast friend. It has nothing to do with our fees. Check this link to learn all about our fees and limits: https://wirexapp.com/blog/faq-wirex-fees/.
As it was already explained, it's a minor technical issue. It will be solved as soon as possible.