How very odd. I had turned off everything, even ad blockers, installed a fresh version of FireFox, and it was still blank.
However, the dashboard has now reappeared! It may have just been a caching issue on my end.
I’m very sorry I bothered you with this. I had read the Yoast Clicky plug-in was facing the same issue and jumped to conclusions.
Thank you for your swift reply. Marking this as resolved.
