I have tried to watch some videos however the sound is very very low. Everything is turned up to full. I've even gone to YouTube but the sound is still low. Will this be fixed? At the moment they are to low to be able to watch.

I've just done the automated process through Mailerlite of getting my domain authenticated. It did it all for me, does this mean I don't need to do the DNS settings and the other stuff? Or does this still need doing?