User Activity

I had a buyer in the USA, who bought an item in April and I gave him time to pay and sent him messages due to the pandemic that I would give him time to pay because the postal system was in a logjam internationally. I have now written to him/her 3 ti...
Ifor I go away on holiday how can I put a message on all my listing to advise the dates I'm away until?
I need to change my nectar details on ebay as I have a new card. How do I do this and can it be done on the app
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