noromance solved it.
"Use the insert URL button." (when in a post window: top bar, 3rd from right)
1. copy the url that you want to post (from eBay, Amazon, any url)
2. in your post, click on the link symbol, a drop down box waiting for you to paste the url into.
3. click YES, DONE
it works for me
ayon triton III
https://www.ayonaudiousadirect.com/product/ayon-triton-iii/
ayon triton II, used