Yep, there's been many very big changes. Firstly you need to register for eBay's Managed Payments now as PayPal has not been used for the receiving of payouts for eBay for many years now.
See here:
You need to provide eBay with details of a bank account and have this account verified. The usual method here, is for eBay to send 2 micro deposits into that nominated bank account for you to receive, and confirm to eBay.
Once this is completed, you will be able to list items for sale, and receive payouts from those sales.
This will show you how to register for eBay's Managed Payments.
https://www.ebay.co.uk/help/help/selling/getting-paid/introducing-managed-payments-ebay?id=4795
Simple Delivery has also entered eBay's lifecycle , this explains that process.
https://www.ebay.co.uk/sellercentre/postage/simple-delivery?mkevt=1&mkpid=2&emsid=0&mkcid=8&bu=43952...
One other big change is eBay's Buyer Protection fee see here:
https://www.ebay.co.uk/help/buying/paying-items/buyer-protection-fee?id=5594
There are big changes to some of the above coming soon please also look at eBay's Announcement today top left of this page tab eBay News!
Lots of reading to do as said BIG changes have happened since you last sold items here!
@juboo87