I have been using the eBay website via Safari for some time as my iPad mini 4 is too old to support the app.  Since yesterday, I have been unable to Watch any items, Buy it now on any items or place bids.  I have checked my payment details and they are still valid.  Any ideas?  If I log on elsewhere not using my IPad its ok, so it seems some kind of restriction on my iPad.  I can purchase from other sites fine.