New Launcher Problems (One of them)

So, I posted it in Official Beta Discord, but it wasn't the right place for it, so here I go again...

I've lost a lot of time with new launcher today. I'm using it since it was released.
I noticed many bugs that was not present in old launcher
( for example, using new launcher, Haven World bugs really fast )
And today I got this problem:

When trying to "Repair" the game, since it was not opening
the "Repair" button keeps appearing even after the load

It Happened to me before, but just by restarting the launcher or the PC, it started to working again.
But today, it didn't. I uninstalled the game, and when trying to install it again..

it was returning to Install button

and I couldn't even "Uninstall" it, because it didn't even get installed.
So I restarted the pc one more time. Reinstalled everything.
And now the Download keeps pausing after 20 mb downloaded.

Then I need to pause the download manually, start it again, and it downloads more 20~30 MB and freezes again.

Restarting PC, Reinstalling Ankama Launcher, the WAKFU itself and even JAVA didn't work
I'll not even complain about losing booster time, since it's happening today and I still hope to fix it in the next hour
But I'm here just to inform you guys from Ankama about it and ask you... How can you guys think about removing the Old Launcher, since it's the most reliable one? At least for now.
Steam launcher has many market related limitations, New Launcher is the most unstable one

So.. I would like to request a few more days with the Old Launcher, or an answer from you guys about the New Launcher problems...

Thank you for reading.

And please, I'm waiting for an answer about it when you guys have time.