i need help

[nbrzac]

So I got the TinyHawk 2 freestyle but, it says rssi low right out of the box and I cannot connect my beta fpv lite radio 2
(btw I am brand new to the hobby) and when I try to connect to beta flight it says failed to open serial port

 

[Launchpad]

Too many questions.
Are the drivers up to date?
Are the Tx & Rx bound? flashing light on the Rx means no usually.
Can you be more specific regarding models? Here's the radio manual. Is it in D8 mode?https://support.betafpv.com/hc/en-us/articles/900003583046-Manual-for-LiteRadio-2