I got an email from them, saying that either my retainers have items for sale on the market board.

I checked both of them, neither of them have items for sale.

Or that I have too much gil.

I only have about 807k gil and none of my retainers. According to the website you can have up to date 1m, and 100k on each retainer...

Been 3 days now and I'm starting to get pretty aggrivated...