@midwestweaver
Some things to check if you are having problems checking out or paying:
Are these items from the same seller, or multiple sellers? US sellers, or located overseas? Established sellers, or new to selling? Possibly the problem is on the seller's end (less likely if problems occur with multiple sellers, or an established seller that has other recent transactions). If multiple sellers, try checking out an individual seller's items separately.
Have you signed in to your PayPal account to make sure that everything is up to date and you do not need to submit any new documentation or update any of your card expiration dates?
What browsers have you tried? Check that you are using the latest version available, if possible, or try another current browser.
https://www.whatismybrowser.com/
Check to make sure your SSL/TLS client is up to date:
https://www.howsmyssl.com/
Have you tried completing the purchase using the eBay app, or using a browser on your phone or using another device?
Other possible things to try: sign in to ebay.ca see if you can pay for the item by going through your purchase history page there if you have already committed to making the purchase.
