Problem with infiniteuploads’ certification authority

I’ve been a long-time user of InfiniteUploads, but recently, we’ve encountered an issue with your service – “Invalid Certification Authority.” We’ve reached out for support but haven’t received a response yet. You can test it for example in https://ltwmcg.infiniteuploads.cloud/2021/04/Logo_ConoSur_202104-mini.png

Can you please assist us with this matter? Your help would be greatly appreciated!?

The page I need help with: [log in to see the link]