Show Thanks Message action does not work

Hello,
I have a CF4 contact form which used to work in Joomla 2.5, but since upgrade to Joomla 3.5, it seems to have stopped sending any user emails.

I have moved the Email element in the On Submit action block, from above the "Show Thanks Message" to below it, and now the email comes through but the user front-end only shows a blank screen and not the message <code>Thank you {name} for your query</code>.

I have searched through a number of past solutions, including the one below, but none of them seem to display a thank you message.
https://www.chronoengine.com/faqs/56-cfv4/cfv4-other-faqs/2694-how-can-i-show-a-thanks-message-then-redirect-the-user.html

It seems the "Show Thanks Message" action code in the On Submit block is not working. Is this a known bug and is there a way round it?

Hello qamar0786,
I'm not a Chrono professional, but after checking your new post, I think that the following links may help:
How can I show a thanks message if I use the plug-in or module?
How can I show a Thanks Message then redirect the user?
P.S: I'm just an automated service😉

I have already tried those above links.
The blank page URL is: <website>/contact-us.html?chronoform=contact_form&event=submit

Hi qamar0786,

Have you upgraded CFv4 to the latest release for Joomla! 3?

If you temporarily set site Error Reporting to Maximum do you see a useful error message in place of the blank page?

Bob

Hi Bob,
Apologies for the delayed response, as I was travelling all last week.
Yes, I did upgrade to the latest version of CF4 before upgrading from Joomla 2.5 to v3.5.
I did have some problem with CF4 not working under J3.5, but that was resolved by increasing the max_input_vars.

When I set the Error Reporting to Maximum, it displayed the error messages below (don't make much sense to me)??

Strict Standards: Only variables should be assigned by reference in .../vividacyredirect.php on line 27
Strict Standards: Only variables should be assigned by reference in .../vividacyredirect.php on line 41
Strict Standards: Only variables should be assigned by reference in ..../vividacyredirect.php on line 70
Deprecated: Non-static method JApplicationSite::getMenu() should not be called statically, assuming $this from incompatible context in .../functions.php on line 47
Deprecated: Non-static method JApplicationCms::getMenu() should not be called statically, assuming $this from incompatible context in .../libraries/cms/application/site.php on line 272

Is there I can easily do as an admin to fix the above errors or is that for a Joomla developer?

Hi qamar0786,

None of these are PHP Errors, just warnings, and none of them appear to be from ChronoForms. What is the vivivdacityredirect.php file from ? I wonder if that is preventing the form submitting somehow?

Bob