Suddenly unable to connect to remote PCs


Although I even changed my password, restarted TeamV, and the other party restarted her computer, and sent me the password - I cannot connect with it. Since it's my mother's computer, and she needs my ongoing help, i would deely appreciate if you help me figure out how I can re-connect to her computer. 

Thank you

(sorry if you're not the right community... it's my first time...)