Got my "replacement" for my Vivoactive 3, today.
First setup was quite easy, but when it comes to the first synchronization (last step if setting it up via Connect mobile), it breaks down the connection. The watch is added to Garmin, but not actively to Connect mobile.
I´ve re-add the watch again and again. Reset it to factory. Restart the phone.
Sometimes I had to enter the pairing code several times, sometimes it works on the first attempt. Randomly a "Do you want to allow a connection to the assistant" appears, but ~1 in 20.
Feels like being next to the finishline, but having an invisible wall
Throwing it out of Connect Mobile (the "Its in Garmin, but not connected to this device"-Section).
Try it without "allow using contacts" on connecting.
Uncountable combinations...
Throwing out my VA3 to not interfere (was shut down all the time). Didn´t help.
Adding the VA3 back again, worked flawless
Loosing my nerves and eliminate a broken Bluetooth module, I took my iPhone from work. *drumroll*
Connection worked, but it took around 1,5 h to submit the latest update...
In the end, it worked
tl;dr:
Use an iPhone or any different phone to install the latest watch-updates. Configure the venue 2 plus as desired.
Disable BT and try to add the watch on your Huawei again (at least a dozen times).
The most important thing(?s?):
After setting up the watch on a different phone, installing all available updates and setting up the device as the primary one,
kill Connect Mobile and disable bluetooth.
Add the watch to your Huawei, do the setup and now wait until it asks to "synchronize". Now use the watch and pray to see also "Synchronize" within the connectivity->phone settings.
This was missing or just visible for several microseconds, before...
First push the button on the phone, then on the watch.
Now it works! And it seems to keep up the connection for about 6h straight.
Which is also the same time, I spent to make it work