Yes, since reading a few posts, I checked my log and was still waiting on four shops, done in April and May, that said they were paid 6/12 and 6/26 but not in my paypal account. So, I emailed them through shopper support and heard back from them on Monday (I emailed on Friday). They replied and told me that there was a problem with Paypal and they would resend the payment and to let them know when it comes through. It didn't and I emailed them again, with the totals. I just received it (Wed 7/19).
It's not normal for them to have this problem. I've been working with them for almost 2 years and never had a problem. HTH