Problem Ebay Module v1.15.5

[rastronet]

Good morning, I have a problem with the ebay module for prestashop, which does not allow me to synchronize the articles.

I put here the error:

Some products have been refused by eBay API due to the following error (s):
21919490: The eBay security policy only allows HTTPS resources in ads and not HTTP. Modify or delete any HTTP resource.
Description

Product (s) concerned:
- Scanner HP Scanjet 5300c
- OfficeConnect Remote 812 Router 3CP204144-TEL73: Enter a valid price for the item (for example, EUR 1.00).
1.00 EUR
21919490: The eBay security policy only allows HTTPS resources in ads and not HTTP. Modify or delete any HTTP resource.
Description

Product (s) concerned:
- Cases to Save CDs

I have modified those ads and in the description I have not put anything, so there can be no http, or https anywhere.
And he keeps giving me these mistakes.
Someone knows why it can be.
Thanks in advance.