IPsec VPN on this modem should be site to site, you cannot connect 3 modems to the main modem.

If you connect the PC to the sky fibre via Ethernet cable, and the PC gets internet, then you can connect a router to the sky fibre. It depends on your bandwidth and the function you need, normally...

The driver date should be the date when the driver is published the first time. Not sure if they will change this when every time they update the driver. Can contact tp-link support and see what else...

Refer to this link to set it up as Access point: http://uk.tp-link.com/faq-1199.html It seems there is no AP mode on this router as for now. Did you try restart the router and the access point?

Is it V1 or V2? What is the model number of the harddrive? Storage and format? Can try another hard drive on the USB 3.0 port. If still the same, it's better to contact tplink support at...

1. Camera Control app will communicate with the camera in LAN, so you can view the video as long as they are both connected to the router (even there is no internet). Did you check the tpCamera App...