Page certification problems with Peertube

Hardware: Lenvo ThinkCentre
YunoHost version: (stable).
I have access to my server : Through SSH | through the webadmin | direct access via keyboard / screen
Are you in a special context or did you perform some particular tweaking on your YunoHost instance ? : no

I’m using a Lenovo ThinkCentre with YunoHost11.0.10.2 .I have Mastodon set up at

I created a sub domain with my provider and installed Peertube, reading the instructions provided. I am able to access the site and login. However, on most browsers I am met with a warning NET::ERR_CERT_INVALID or that the site is unsafe.

I read in the documentation that HTTP is not supported. Is this why I’m getting the error? If so, how do I work around this?

I already have a let’s encrypt certificate for the main domain and this works ok with Mastodon. I have read that addressing can be tricky on another thread but I struggled to understand it. I also run Nextcloud on the machine which shares the IP but has it’s own unique DNS name.

Is this problem down the the Peertube installation or should I follow up with my DNS provider? There doesn’t appear to be any issue with finding the Peertube page, just the certification of it.

Please go easy on me, I find all this stuff very confusing and I struggle with some explanations, especially when lots of acronyms are involved. I have searched the forums but have been unable to find help that makes sense to me. If at all possible, please explain like I’m 5 years old. Apologies in advance for any potential stupidity.

I just want to share my videos in a simple, safe way.

Really appreciate any help!

Eeeeh can’t you just install a Lets Encrypt certificate on video.yourdomain.tld just like you did for Mastodon ?

Granted that things should be simpler than that, ie installing a Lets Encrypt certificate for the “parent” domain should be enough, cf Option to add (sub)domain with Let's Encrypt certificate / Simplify the UI flow · Issue #1634 · YunoHost/issues · GitHub

Gosh I’m such an idiot!!!

Just went back to the original YNH install guide and saw I could install the certificate from the OS itself!
I was getting confused by the Cerbot install guides.

Thanks for getting back, feel free to call me idiot for all eternity!

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