@duongcuong96 thanks for you help and sorry for my later response. it’s now solved.
I’ve found th error issue… I missed to upload the wp-login.php file.
sorry guys.
Problem solved
Ok I found a solution for one of my 2 request:
using this extension ‘contact-form-7-dynamic-text-extension’ I can grab the current looged user posting the form.
But I still can’t figure out how to an info created on the page outside from the form.
any idea?