Hello @Camila13 If you want to change the wireless password of the WR940N, please follow this guide. If you want to change the login or administrative password, please check this guide.

Hello @Vinesh_1 The router logs you attached don't record much info about the issue, please go through the troubleshooting suggestions in the following thread, then report back the requested info:...

Hello @RamimRashid Please refer to this guide to do some basic troubleshooting if the ping is high when connected to the router: What should I do if I get the high ping value from TP-Link Wi-Fi...

Hello @TP_LINL-FCE6 Please follow the article to troubleshoot if you cannot find the wireless signal of the router: What should I do if wireless connection cannot work on TP-Link Wi-Fi router?

Hello @OlehA Archer A8 doesn't support the VPN Server as you requested, you can check its User Guide below: https://static.tp-link.com/2021/202101/20210112/1910012778_Archer%20A8_UG_V2.pdf You can...

Hello @Meubi_low This concern was discussed in the following thread before, please check: https://community.tp-link.com/en/home/forum/topic/214828