Unfortunately I am getting errors on several parts of the ebay app in the UK. When I clicked on the help link and the contact seller I am getting the following :
We haven't received other reports of this. Is this still happening for you. Can you try the below steps to help resolve it and also try uninstalling and reinstalling the app.
Open your device's Settings app.
Find Apps or Application manager (depending on your device, this may be different, possibly under "more" settings).
Select the eBay app from the list.
Tap Force Stop.
Open the Play Store app.
At the top left, tap Menu☰.
Tap My apps & games.
Apps with available updates are labeled "Update."
If an update is available, tap the eBay app and then Update.
Open your device's Settings app.
Tap Apps or Application manager (depending on your device, this may be different).
On the list, tap the eBay app.
Find Storage.
Tap Clear data.
Open your device's Settings app.
Find Apps or Application manager (depending on your device, this may be different, possibly under "more" settings).