Is there something specific that doesn't work? Is it live TV, On Demand, login? Do you get any error codes?
Are you using an up-to-date version of Windows and Edge? Are 3rd party cookies enabled?
I just tested on v102.0.1245.41 on Windows 10 and it was working fine.
Is there an error code that comes up? What is the exact error message? Have you tried multiple live channels (and ensured they're included in your subscription - try CBC or CTV)?
Does On Demand work?
Finally, do you use any other ways to watch Pik TV? Apple TV, Android TV, mobile app? Have these been working fine over the past few weeks?
Details like this + the questions above will be helpful to isolate whether it's an operating system/browser version issue, a defect or an account-level issue (maybe something with your subscription isn't correct).
I am having the same problem since a week ago. Pik TV stopped playing on microsoft Edge brower all of sudden and since then I keep getting message "Playback Error, please try again later". I can play on Google chrome though.