@Rumsiki Switch back TD-W9960 to DSL modem router mode and follow this guide, then reboot it and test again.

@ManekX According to their specs, they don't support PoE. You can make yourself a power extension cable by simpy buying 2-wire cable and similar connectors according to the power plug size:...

@CR.Chander Here's a print server guide you can use for setting up your printer.

@Rumsiki Your settings seem fine - that's the AP mode - Case 2 (because the Operation Mode is Wireless Router). Make sure the connection between devices is LAN1 to LAN1. Reboot the TD-W9960 and test...

@redmike5 To be able to benefit from seamless roaming you'll need a mesh network. These two devices can't form a mesh network between each other, hence the issue you experiencing - that's normal...

@sagar002100 On C6 (configured as AP) 5GHz band they will for sure.