Contact form doesn’t send emails after recent update

First of all, I would recommend using an SMTP plugin. It makes the e-mail / contact form exchange much more secure.
How does the not sending manifest itself? Do you get an error message from Enfold – or do you not receive any test emails via the contact form?

A lot has happened with providers in terms of security.
So if you do not have an spf record in your DNS settings, your emails may go out but be intercepted by your provider.
I always set spf-record , DKIM and DMARC in the DNS settings.

but you can use the enfold contact form – but with WP Mail SMTP
The free version is all you need. – It has many mailer options

You just need to find out from your provider which smtp server settings you need to use.

By the way: Incidentally, the spf-record is probably the most important thing here if, for example, the e-mail address used in your installation to send the contact form does not match the domain.

e.g:

SPF Include Example
For example: If you have “include:_spf.google.com” in your SPF record, and emails are sent from a Google IP address, it will be considered an authorized email sender because the originating IP is found within the “include” mechanism of that domain’s SPF record. As a result of this, the email will successfully pass through the server before reaching its intended recipient.
To authorize google as a verified sending source, this should be your SPF record syntax:
v=spf1 include:_spf.google.com ~all

that means : f.e. if your wordpress domain is your-wordpress-domain.com but you try to send your e-mails via contact form by (Email address hidden if logged out)
you had to go to your provider of your-wordpress-domain.com and set a txt record with including the url : your-name.com to authorized email sender.

Ask your provider what setting might be the best for your installation.
this differs from provider to provider. For example – on former times i had my domains on hosteurope.
so i had to set a txt record : v=spf1 a mx include:spf.server-he.de -all

etc.