I have had a great experience and do not recall that certificate issue. I do not work for Manjaro though. Let’s give the OP the best advice possible. I have he

I have had a great experience and do not recall that certificate issue. I do not work for Manjaro though. Let’s give the OP the best advice possible. I have heard good things about EndeavourOS and, as you say, it is very similar to Manjaro. I may try it for my next install. https://itsfoss.com/endeavouros-vs-manjaro/ https://itsfoss.com/endeavouros-vs-manjaro/