I've had no issues with Firefox Sync on desktop but frequent issues on Android. I've reported issues previously here: https://bugzilla.mozilla.org/show_bug.cgi?id=1879003 Yesterday, it failed in a different way, announcing that I needed to sign into Sync. I've tried a dozen times yesterday and today using both QR scan and email confirmation. All fail in various ways. For example: * After scanning QR code: "500 Error Oh dear, something went wrong there" * After scanning QR code: "Pairing not successful. Error while creating the pairing channel" * After scanning QR code and approving on mobile device and desktop, desktop says success, but phone stays on "Approval now required from your other device" Interestingly this page isn't open in the normal browser. If I click the three dot menu, it says "POWERED BY FIREFOX, Open in Firefox" * After going through all the steps and it saying "You're signed into Firefox," yet when I go to share a tab, it asked me to sign in. Any tips on getting Firefox Sync to work? I don't see any troubleshooting sections in the online help articles.