@Galiya90 wrote:Thank you so much for your reply!Did you have any expirience in use Wireshark? Maybe you can give me any advices, or even instructions?...
I can't, but Anson can: https://www.youtube.com/watch?v=TkCSr30UojM
Wireshark, or any other tools that does packet inspection. There are hundreds out there. If you do have an IT who does network admin he/she should know how to solve your problem in <15min. using similar tools.
Thank you so much!