I have the same problem and it started last night too.
I cannot get data from the API or from the bloomskyLatest.php since that also uses the API.
I also was going crazy thinking I changed something so thank you for this update.
All other features of the Bloomsky are working, ex: dashboard, App, videos and WU feed.
I updated my webcam's to use the WUnderground link instead for now until they fix this.
Just unable to capture the images every 5 mins now which is disappointing unless cans setup the old screen scrape from WU site...