Hover/dwell click and mouse keys are not working

[Scorpion]

I'm using lubuntu 18.04, after i reinstalled the OS the onboard dwell click key is grayed-out and cannot be used.
Also the mouse keys (in onboard) aren' t working anymore if i click one of them the mouse gets stuck on the key.
Using dconf-editor i tried with enabled/disabled dwell click (in the system) but nothing changes.
The dwell click is very important in this touch system certain things can be done only so.
I reinstalled the OS once again but nothing. Also i remember that the super key had the ubuntu symbol instead of the writing "win" when it was working.
But when it was working wasn' t perfect.

[dr.n (dr.n)]

did you install mousetweaks?

sudo apt install mousetweaks

[Scorpion (scorpion2185)]

No thanks, i totally forgot about it.
With the touch you must tap quickly and shortly 3 times (in the last hold) and the right click is perfect.
But can you explain me how works the dwell click option gesture?
After the pointer became a cross if i move to the left it should emulate a right click? (i also tried with the physical mouse).

When the dwell click is greyed-out and you click it you can add a writing "install mousetweaks".

[Scorpion (scorpion2185)]

I should mark it as a request support?
I selected Fix released.

[Scorpion (scorpion2185)]

The mouse key (so mousetweaks) with the touch are VERY bad.