If changing user-agent worked (all it does is changing reported browser and version used to the website when loading, it's a header in http request), then it's not a problem with the browser.
Since they are mentioning bots, this is probably what changed. Some combination of IP address, user-agent and whatever else they have access to triggered anti-bot protection. I would assume ticket-selling website this big fights bots on daily basis, you just happened to be collateral :)
I missed that part about Firefox at work working. Then yes, it is less likely compatibility issue. Needs debugging.
If you already tried disabling all addons (and then cleaning website data + refreshing page with ctrl+shift+r), it could be some setting in browser.
If you go to about:config (type, not copy-paste) in browser, it will open many configuration flags. Flags with bold font have non-default value. If flag description sounds like it could be related, try resetting it.
As a last resort you may try Firefox Beta or Nightly :)
Many european countries have great immigration laws and opportunities. Some companies will offer relocation assistance and reimbursment. It's a challange, but it's possible.
I'm daydreaming about potential feature and sell point some manufacturers may adapt to bring this regulation further into a win-win for themselves and customers. So yes, essentially bring me 3310 back :)
Something that I haven't seen mentioned on this topic:
having a spare charged battery with you also have so much more sense than carrying a powerbank. No losses transferring power to phone, no excessive heat, MUCH lighter.
This is what we have for radios (walkie-talkies), drones, cameras, but not for phones, where we really need this.
After a few recent photo shoots, edited photos on the go on Pixel Fold, mostly in Google Photos. AI tools and basic adjustments are great (with Google One subscription) and you get ready to share album in the end. Snapseed if I need more detailed edit.
It works, but far from perfect yet. Screen space is not used efficiently, device starts to heat up after long use of internal screen, lack of stylus.
Looking to buy Samsung tablet, waiting for Tab S8 series to be announced to compare.
GBoard is only fine if you live in US and speak no other languages :)
It doesn't support automatic space addition after punctuation outside of English, doesn't support combined keyboard layouts (writing thos from a combined de/en layout on SwiftKey).