Hi, can you please post me your site details to check this? if yes you can use the form below the reply in "Site Details" tab. Basically we need only site link and credential to access with a normal user to check the edit profile page.

Hi,
for field called "How many accompanying persons?" please try to set "Default Value" to 1. If it works then I have understand the problem and we can fix the issue.

Hi,
the parameter was set to "1" from the beginning (please see it in the attachment).
I'll try to turn the field off and check if the submit button works.

After disabling this field the button works properly...

OK, after a short diagnosis for field "How many accompanying persons?" I changed the options as follows:
Default Value 1
Max Value 10
Min Value 0
Step 1
and it appear to be OK.
However I would like to have Min Value set as 1, but I think that it cause the problem...

Hi,

but I think that it cause the problem...

Yes, this is the problem, when condition hide a field then it also delete the value (this to avoid unexpected behaviors cascade conditions), unfortunately when the value is deleted then the browser add "0" in all HTML integer fields. So if the field is hidden with value "0" and min value set to "1" then submit button does not works, because it is a error for the browser.

We will try to make a fix for this in next release.

OK. So (due to the above) for this type fields the Min Value must be set as 0 if any conditions can hide the field...

By the way - how are the names of files uploaded via the user profile created ("File" fields)?
After upload, on my server I have random filename beginning with: test_file_(some characters). Is it possible to leave previous (original) filename?