By value do you mean values (database name, user name, password, host)?
May be a good idea to do a screen shot of the page where you get the ERROR :)

I have already deleted the installation and the website and it is useless for me to send a screenshot the error is as follows:

• ERROR: Impossible to connect to Database.
• Check your database config settings below and update them if necessary...
• Base config recap...

then it proposes to make a manipulation in the file conf and to put a value to 1 to make a rest.

The idea of the screen shot was not to see the error but it's location etc.

when I connect with PHP MyAdmin it works

The possibility that it does not respect upper and lower case letters in the database name or user name?

when I connect with PHP MyAdmin it works
Ok so you have the right details

The possibility that it does not respect upper and lower case letters in the database name or user name?

By 'it' you mean the b2evo transfer

Not an HTTP / HTTPS issue I suppose ;(

The only value I have that is mixed case is the password upper/lower/symbols all others are lower case.

Can you try a different install of b2evo and see if that will connect.

As a last but but final option you could change the database access detail or|and send the login detail you have by private message so someone else can try. ?

Can you install v7 independently with a clean database and import the data.

By the way you haven't provided a URL or php version etc.

it's a zéro installation, if I install v6 and v7 alpha work fine.

I have 7.0.1 running as a test bed at https://cxghana.com and had no problems from upgrading 7.0.0 to 7.01

and you are still not providing much detail, even if you think it's not useful it does add context which encourages extra thinking. An image or story with few details doesn't evoke much interest.

So by zero installation you mean a fresh install
You are not responding to the suggestions so it's difficult to know what further to suggest.

Are you able to start from scratch?
It seems you have tried to upgrade from 6.11.2 and 7.0.0.
What as steps to 7.0.1 or as single steps from each.
You don't say if it was an auto upgrade or a manual ftp.

See :- more questions and you have answered the others :)
That's why full screen shots including the url are useful it provides background info without you having to answer questions
and what version php etc. etc.

• I don't use the internal function of the FTP website, it's a manuel installation.
• I successfully installed version 6. If I take the same parameter for the SQL account and add a new datables with version 7.0.1 it doesn't work.

I'll try to upgrade from b2evolution 6.11.2-stable to 7.0.1

• PHP version 7.3.7
• Version MySQL 5.6.33-log

Hello,

I have try to upgrade from b2evolution 6.11.2-stable to 7.0.1 and work.