How to debug code on Vivoactive 5? Nothing saves to myapp.txt to LOGS folder. RequestWrite doesn't work.

On Vivoactive 5 I can't debug my app because Vivoactive 5 doesn't save to MyApp.txt any logs. 

I put MyApp.txt file to Logs folder. 

Another problem is with BLE requestWrite on Vivoactive 5. 

To comparison, on Fenix 7,6, Venu 2 Plus everything works just fine — logs are stored, requestWrite works just fine.

Where is the issue? Are these problems just related to Vivoactive 5?