Which issue? the phone or the app connection?
A lot of the VW/Skoda in-car tech fails frquently during the cold, various things like seat heaters, SoS systems, front Assist, internal lights etc. etc. Most of those faults clear after shutting down the car and re-starting the system. The App connection is usually down to the servers being off line or the 12v battery being too discharged for the cars systems to work.
The cars are mechanically pretty well built but the electronics/operating system is remarkably poor and VW/Skoda’s response is to say just live with it and we’ll fix it in the next software issue. Unfortunately this isn’t always (or usually) the case.
The early Enyaq buyers are still running software they had when they bought the car over 2 years ago, many are waiting for an upgrade to version 3.7 in the older 60/80 models. Those are also unable to get the newer version 4.x or 5.x software that was in the early 85 series as the cars hardware isn’t compatible.
My 1yr old 85x has v4.0, that too has been superceeded to 4.1, then 5.2 and now 5.4. Again there’s very little evidence of those on V4 getting an upgrade to the (hopefully) improved v4.1, 5.2 or 5.4 software.
It’s not just a few users that have issues, only a very small percentage report them in online forums, but when they do you can see the same issues reported time and time again. Look at the charging flap issue, this has been reported for years and VW/Skoda are still making cars with the same known problematic design, they simply don’t care.
Please excuse spelling/typos. Apart from being a clot it turns out I had one on my cerebellum that's now causing various problems!