Connessione wireless con dispositivo

[zzaino]

The wireless connection with Caliber CC installed on my Samsung tablet malfunctions or does not work.
If I connect to the "content server" I can only download one book at a time, otherwise the system hangs, but that's the least of the problem.

If I connect as a "wireless device" the connection starts but after a few seconds the following message appears:

calibre, version 6.13.0
ERRORE: Errore: Errore di comunicazione col dispositivo

[WinError 10054] Connessione in corso interrotta forzatamente dall'host remoto

Traceback (most recent call last):
File "calibre\gui2\device.py", line 104, in run
File "calibre\gui2\device.py", line 636, in _upload_books
File "calibre\devices\smart_device_app\driver.py", line 59, in _synchronizer
File "calibre\devices\smart_device_app\driver.py", line 1498, in upload_books
File "calibre\devices\smart_device_app\driver.py", line 733, in _put_file
File "calibre\devices\smart_device_app\driver.py", line 616, in _send_byte_string
ConnectionResetError: [WinError 10054] Connessione in corso interrotta forzatamente dall'host remoto


It all happened after I formatted the sd card, but that could be a coincidence.
Thanks to whoever can help me.