If your printer is on DHCP, you can find the IP address in the DHCP list of the modem router

suggest you contact the support team at [EMAIL="support@tp-link.com"]support@tp-link.com[/EMAIL], they will response.

suggest to call the local technical support: India For Indian Users Only (English & Hindi Service) Toll Free:1800 2094 168 E-mail:support.in@tp-link.com Service Time:10:00AM to 6:00PM, Monday to...

suggest to test this adapter on any other PC to see what happen

suggest to check the firmware and hardware of the access point, update it to the latest first

better not change the antenna, the TL-ANT2414B is Outdoor Directional Antenna The antenna on the 722N is Detachable Omni Directional