Hello Luico, congratulation, great HW for below 60€ (what I have seen on China Ali-Ex...).
I also have bought 2 Nano VNA because I started with the QO-100 project and require something to measure in the range of 2,5GHz.
I have the v2 since 1,5 month and already outdated. The v2.2 seams to be more solid with the N connector and solid cover, cable, box and calibration set and that for the same price.....
Did it work with the Nano-Saver as well?