Owner for over 1 year, and I can't say it's worth its money. Luckily, I got it for 60€ so I'm not crying about it. I completely agree that it doesn't even reach 50% of the mobile's speed, with the same company even (I should emphasize though that the maximum speed is 50Mbps, so it doesn't matter if your mobile has 4G+ etc., the device will only go up to 50). With 3 bars of signal (meaning full), I can't work properly.

Firstly, I should mention that I got it because I wanted access to the cameras for my vacation home.
POSITIVES
Easy installation and easy setup
It's okay for accessing cameras and monitoring.

NEGATIVES
Its wifi is terrible... at a distance of 10 meters, the signal is lost, so even though I got it for the cameras... I had to use an extender to reach the camera in the other corner.
Its speed is not good... As I mentioned above, it should at least reach a stable 40+ if your mobile has 70+, with 3 bars of signal... which doesn't happen.

I have a second mobile that I use as a hotspot with the SIM card, and when I leave, I connect the card back to the router because I don't want to have my mobile plugged in all day.

My opinion... don't buy it... and I really think you'd be better off with 5G, even though they're a pain in the head there, but I think if you want to do serious work... Get 5G and you definitely won't regret it.

That's it and good luck.