Sorry, I’m really not a techie - just the only one in our forum using my browser so I have to go down the solution finding path on my own:
Since the last update I cannot connect via mobile anymore as I am using the Free Adblock Browser and having the same issue as shown here before on the screenshot. “Browser is too old…” - but it’s the newest version.
Does Adblock identify itself as something else than a normal browser, like messing up user agent? If so that is really bad idea (worse than blocking ads 
)
No, it’s just a browser.
Adblock browser on android might be using a very old version of chrome as it’s base. That’s why discourse thinks it’s an old browser. You should contact adblock browser developers to rebase their browser to a recent version of chrome.
That sounds like an issue with Adblock itself. Try contacting them VIA social media so they can push an update to fix the issue: https://twitter.com/adblockplus