if they are GTC than according to Rebecca you have many months to fix them
Rebecca has disappeared from this thread so you may want to submit a Support ticket
also when some of your listings end try a Bulk ReList and see if the Seller Details are picked up. Part of me wants to say they maybe as the Seller details are handled differently than the Check/Shipping/ etc.. information
as to your Paypal email I would think that also has to go away as eBay isn't that smart to know what type of email address it is
as a test you can go into eBay and edit a lisitng there on the second page on top you'll see a warning if eBay finds an email address