I've tried to link my domain to Render and Koyeb (where I host my API and webpage) and I get similar errors

From each of their documentation:
"All applications and static sites hosted on Render come with fully managed and free TLS certificates. There is no setup and you don’t need to do anything at all; everything just works out of the box."

Any ideas?

https://m.primal.net/McqG.png 

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