There is a current issue with the printing of labels, many are reporting this , you are not alone.
Someone has just posted this helpful information see below, perhaps this is the reason why you and so many others are in the same predicament?
The business Click and Drop website is down since sometime last night. I assume this is related and eBay's RM labels are generated from the same domain.
RM Click and Drop business domain is different to the retail site. The retail site is still working.
I assume ebay gets their labels generated via the business domain.
RM own C+D service checker claims the site is working correctly, but the website page shows it as down.
@but-937362
