New problem today: when I click the web link for Stringify Controls on my cell phone, I now get a blank Things+Flows page with the message "Fetch controls rejected" popping up briefly at the bottom. Running the latest available version of Chrome for Android 4.4 (this phone is Android 4.4, can't run the Stringify app, but can access the Chrome web link to operate pre-defined controls).
I tried accessing Stringify from my usual Firefox web browser on my desktop when I got home. Same thing - "Fetch controls rejected". I tried logging in from the Stringify.com home page instead of going to the Controls web page - but as soon I click Login, it jumps to the same Controls page where it fails (probably has a login cookie that jumps it straight to that page?).
I tried accessing Stringify.com from Chrome on my desktop, which doesn't auto-login, and from desktop Chrome I am able to log in and see the Controls web page normally.
I assume the Stringify app still works - I haven't bothered trying it on my other cell phone where I normally use the app.
What changed with the web controls page? Can it be fixed?