Hello,
Thank you for getting in touch with us.
You have set a canonical URL manually on all your products. We have removed the canonical on one of the products and the product sitemap is working fine now.
Please do it for the rest of your products so they can be included in the product sitemap as well.
Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.