go into settings and update the location and it should allow you to if not open a ticket with youtube and ask why and how but you could be waiting days or weeks for a reply i had to once cause i couldnt change any pictures etc on my channel but waas able to transfer everything to a new channel. so that could be a possibity to do
UK
@Edison Hi I went to look at your channel using the link in your profile but it doesn’t work? Just thought I’d mention it. 
It is currently working for me; however my hosting company is currently going through a server migration which may cause outages.
Working here too via the direct route
Yes, maybe that was it as it’s working for me too now. Subbed it