I have been trying since yesterday to install and log into Samsung Health to use my new Galaxy Watch 5 Pro. On my phone I get the following message:
This website is optimized for the following browsers. As it may not work correctly in other browsers, change your default browser and try again. (Error code: LNK_1004)
I have tried every browser available on my phone: Chrome and Firefox, which are both on the list in the app. I installed Samsung Internet and got the same message.
I switched to my computer and tried logging in from the Samsung Health login page, https://www.samsung.com/us/apps/samsung-health/. On the first attempt, I got directed to a login screen, put in my credentials, and entered the 2FA code Samsung sent to my watch. It waited a few seconds and directed me back to the login page, still logged out. On subsequent attempts I clicked on "Sign in/Create account" and after a few seconds got directed back to the home page I was already on. The only way to enter my credentials again was to clear all Samsung cookies first. That gave me one more chance, with the same result.
I tried this on my computer in Chrome and Firefox in Windows. Tried Firefox and Chromium in Ubuntu. Tried creating a new account with an email address I've never given to Samsung before. In every case Health recognizes me well enough to send a 2FA code to my phone, but completely ignores me after that.
If Health won't let me log in with a new email address to a supported browser with a clear cache, how is anyone logging in? Any suggestions? I sure would like to get some use out of my brand-new $500 Samsung watch.
Sadly, no. It's not just new watch users. I have the same thing too. I got logged out of the Smartthings app and can't control my TV because of it. Regardless of which browser I use, what's setup as default, how much blood I let drip in the microphone hole as sacrifice. Same result. Says browser is not compatible and doesn't let me sign in.
I too have the exact same issue. I am using a OnePlus phone with my Galaxy Watch5. The same problem continues when I use a Samsung phone too. I tried everything. Will be checking this thread to see if anyone comes up with a solution.
Android, Google Credentials, needed to use computer as well
Not sure how well this works long term yet, however here are the steps as specific as I can make them:
copy the browser link that pops up on your phone and email it to yourself - open in approved browser on desktop/laptop
Log in with whatever credentials you used before (I used google so it wanted that method).
Select register email on main screen - if you don't have a password yet it will make you complete that task first - that's fine and was all I needed to get the login to work on the phone
Go back to phone, smart health, login, type in your email address that you use (again, mine is google) and then I was prompted for my password (first time ever).
Once you have done that navigate all the permissions portions and get to accessories - make sure your watch is listed as an accessory, if not then
search for watch in the accessory list (search for nearby is easiest)
on watch select the icon for samsung health, scroll down to settings
scroll ALL the way down to 'make visible to other devices'
and then it should show up to your phone - select and register
So far it is working for me, maybe it will for y'all as well
