Unable to access marketplace

Hey all-

I have sold a few things on the PD marketplace in the past with good success. Starting a few months ago, I have not been getting confirmation emails when I post an item and then I was not notified when I sold an item. I got an email from the Recurate help people saying that I should not ship the item that sold a couple weeks earlier, because the order had been cancelled due to my not having shipped it. The email telling me it was cancelled was the first I had even heard that it had sold at all because I never got an email telling me that it sold.

I have been in touch with their support, and they are blaming spam filters and my email (no messages are in spam related to them). I also can't seem to access the seller hub (where your listings are located). It gives me an error and redirects me to my PD store order history.

Anyone having issues along these lines, or have any ideas? Support has no suggestions.