I have a little problem in Nintex, I need to use the repeating section and I did but the textbox disconnected automatically!
it was connected to the column I need but when I drop it into the repeating section area it disconnected
I will attach a screenshot for it, and I think my Nintex version is 10
you cannot connect single control(s) within repeating section to a list filed(s).
you have to connect whole repeating section to a list field, which must be of type plaintext multiline text field.
it will save as a XML structure. if you name your controls within repeating section then you will be able to parse them out of XML by these names.
if you hover over the control with exclamation mark or if you open its configuration dialog you should see some hint what's wrong with its setup. but this definitely shouldn't be caused by just removing connection to list field.
can you post configuration of that control?