Today I got a notification on my phone from ebay so in my email inbox I clicked the message but it took me to my whatsapp contacts! I'm not usually signed into ebay on my phone so not sure how long this would have been going on for but I remember it used to take me to the item page in the ebay app, not whatsapp!
I deleted whatsapp since I don't use it much anyway, clicked on the notification in my email (still marked as unread) and it took me to a compose new email screen!
I had to click the notification in the bar for it to mark as read and to actually work
Deleted and reinstalled ebay app, waited for notification and same thing happened. Doesn't happen when I go through the notification bar it takes me straight to the item page that way. I suppose I could do it that way and just get used to it but I'd rather know why this is happening and get it fixed.