Facebook Marketplace Messages not showing in Messenger

My Facebook Marketplace messages are only shown in the apps on my phone and ipad but they are not on the Messenger app on my pc nor on the actual webpage. Other messages are ok. I have uninstalled the app on pc and restarted but nothing. Can anyone help please?

You should synchronize your account on all devices. By the way, I am also into marketplaces, maybe you would be interested to know about all the pros and challenges that each marketplace business model has, and which transaction fee marketplace revenue model each marketplace giant uses, and why. This marketplace revenue model is the most common since the fee is justified.