Indexhibit Support

Hello, Hi!
I'm using indexhibit for 10 years already :O
I'm doing the upgrade because my new host have the php 7...

When I arrive to install.php Indexhibit:

OK /files/ folder OK
OK /files/gimgs/ folder OK
OK /files/dimgs/ folder OK
OK /ndxzsite/config/ folder OK

Fill in the additional fields before you submit the installation.

When I submit, nothing happens... :(
What should I do? please help!
jpbd.ch

Now, it says "you are already installed". Maybe because I check all the permission and open them... but I still can't get in my console.
Where to go? What's the next step? What should I do? Any tutorials? Can I still have my old website again?

Exactly the same happened here! Did you solve it?