Looks they failed to implement "open in default browset" and used "open in chrome" instead. Or maybe it has a stupid check if chrome is installed before opening link externally to avoid problems
If it's trying to talk to a device over Bluetooth or USB, it's not supported in Firefox. Mozilla refuses to implement WebUSB because they think the danger of letting people accidentally flash malware onto a physical device outweighs the benefits.
It's probably using WebView, or whatever it's called where an android app brings up a browser window. If you have Firefox as your default web browser, apps will use it instead of chrome. It's usually pretty nice, because if you have adblock in Firefox you also get adblock in the app.
It's possible that the sign-in webpage wants to talk to the camera before returning control to the app.
Yeah this is the remote shooting app, for camera control, it'll use Bluetooth to establish connection with the camera and then switch to WiFi for live view.
I just downloaded firefox focus, and etsy wont let me log in with it because it has adblocking. even to track a shipment. They even stopped putting the tracking number in the shipment email so i cant go directly to usps. Im sick of being railroaded into giving up my privacy.
I have an very long blacklist of companies for this reason.
The problem with standing up for your privacy is that it massively diminishes the resources available to you. I'm down to shopping at Costco as a single adult, because I had to say fuck you to Target recently, and my local grocery store was busy doing anti-union bullshit at the same time. So I'm driving further and probably paying more in the long run.
But they aren't principles if you don't have to give something up to stick by them.
SO many corporate/govt websites do this. My health insurance and credit card company do it. It's mind boggling. I always keep some variation of Chromium installed to deal with it and then go back to LibreWolf.
I've not used LibreWolf, but assuming that Firefox addons are generally compatible, it might be worth trying Chrome Mask. It's made by a Mozilla employee.
Does it communicate via usb with the camera? If so it is probably because it uses webusb which is not implemented in Firefox https://caniuse.com/?search=webusb
Typically they have a dependency on something only one browser can do, and rather than using a polyfill or a better browser, force their bad technical decisions onto the user.
To be fair some things can't be polyfilled, like the WebUSB API, as someone mentioned in the comments. But lots of the sites could fix their code so it works on Firefox, yeah.
Revolut business is the same. Somehow you must have chrome on mobile if you want to send a bank transfer from desktop. (It opens a qr code that when scanned, only works with Google Chrome and not any other chromium browser)