Hello. Recheck your email sending options. Try to choose PHP 7.4 on the hosting.

Dear Aleksej,

The setting is as always never change something to that.

I use PHP 7.4 already 

Regards,

"The setting is as always never change something to that." - Try different types of e-mail scripts.

I sent a notification about your question to the company employees, expect an answer from them here in the comments.

Hello Nekatrios

I've tested your project under the /test subfolder and I can confirm that no PHP is present there

This is why if you go to mieconsultancy.com/test/admin you also get a lot of code but nothing else

As of now, there doesn't seem to be any PHP version active on this subfolder and for this reason, the email surely cannot work

Can you please double-check this first and keep me posted here after?

Thank you

Stefano

Dear Stefano,

After double-checking the project I find out that, the Contact page is HTML.
I change it in PHP. Login to provider deletes the subfolder /test create new and upload the project.
Clean the browser cache and visit the website.
The results are in a Contact page (before as HTML loading normal but no email send) no page loading just shows a lot of code.
The question from the provider (one.com) is curious how you can know if PHP not running.

Please advice

regards,

Dear Stefano,

Additionally, the original website mieconsultancy.com last update was done in August with some corrections and add a service page. On s&p and contact pages nothing changed did. After upload test everything and work normally. (from both forms receive the emails) Now even that not working 

Regards,

Nektarios

Hello Nektarios

The issue is not that your files are not in PHP. The issue is that the hosting himself did not enable PHP on your subfolder. 

If you place any PHP code in that subfolder it won't work because the server did not configure PHP for that folder correctly.

Please have this checked first. If no PHP is enabled on the subfolder, nothing will ever work there

Proceed like this with your hosting provider and keep me posted here

Thank you

Stefano

Dear Stefano,

A few minutes ago I received a test email via webmail as the sender is my provider technical department. 

I test both site versions and work back to normal, I can receive the email and confirmation email to a client. 

One big thanks for your support and guidance you are always here for whatever help we need.

Regards,

Nektarios