S
SRE
Ask your installer to do it - that's what you're paying for
Everyone on here is trying to get their own customers sorted out and will only have access (and I haven't even got that) to their own customers.

The mcs number is shown on pending certs to the left anyway
I am 90% sure ....
Guys keep refreshing page i did mine within 5 mins
It works that way refresh once the link breaks
Reply to the thread, titled "MCS broke" which is posted in Solar PV Forum | Solar Panels Forum on Electricians Forums.