Hi Malak e., Usually I see this when someone has an internet issue between themselves and Roll20. You might try rebooting your modem, rebooting your computer, and/or using a VPN. If already using a VPN you might try changing the VPN location to try to route around the issue. You might also try reducing your bandwidth usage. Sometimes something (like a windows update) steals all the bandwidth. Alternately, sometimes it is a browser issue. Please make sure your browser is a supported browser, either Chrome or Firefox. If using Chrome or Firefox you might try using the other one to see if the problem persists. Additionally, try disabling your extensions to see if one of them might be interfering.