USB C to HDMI

Bought this adapter (Sniokco) about a year ago and was working fine with my HP Spectre x360 Convertible 13t-aw000. Nevertheless, now it seems to have contact issues (and probably that is the case). When I plug it you can see it detects that it has been plugged because the laptop screen will flicker but sometimes the monitor doesn't turn on. Happens with my two HDMI monitors. 

At the same time my brother game a T'nB USB C to HDMI cable which didn't work either so tried to understand the latest on this type of connector/standards.

Just for reference, the laptop spec says:

2 USB 3.1 Gen 2 Type-C™ with Thunderbolt™ 3 (40 Gb/s signaling rate, Power Delivery 3.0, DisplayPort™ 1.4, HP Sleep and Charge); 1 USB 3.1 Gen 1 Type-A (HP Sleep and Charge); 1 headphone/microphone combo.

No surprise as it was working...

One strange thing is that the adapter in the Amazon pic says 4k UHD but mine doesn't say. Still, I think it was working as such before.

Couple of good links:

1. Mouser app note
2. Xataka

According to a reviewer my brother's cable is actually using MHL! Funny because they don't say anything on their page. They say it works with 3.A USB C which is not a version of USB-C?!? So if the source doesn't have it, it's not going to work. Which is the case of my laptop... Duh!

Solutions I thought of:

1. Probably is the adapter. I am saying that because I held it in place with one hand while shaking the rest and it failed. Also it failed when using it with my other laptop. So, a solution is to buy another one, but heck not the same brand. This lasted less than a year.
2. Get a wireless adapter, like the Microsoft Wireless Display Adapter based on Miracast.