Hi,
In Veronika I see, that sometimes there is lack of icons - mainly in Edge or Firefox, but sometimes on Chrome too. Could you say what is wrong?

You may change CDN link to font awesome stylesheet in head.php.
Currently it is:
//maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css

Alternative could be:
https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css

Now I have:
osc_enqueue_style('font-awesome', osc_current_web_theme_url('fonts/fa/css/font-awesome.min.css'));

when I changed:
osc_enqueue_style('font-awesome', osc_current_web_theme_url('//maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css'));
or
osc_enqueue_style('font-awesome', osc_current_web_theme_url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css'));

it doesn't work

@azi_111
Pay more attention to your code, I believe this could be fixed also by person with 0 knowledge, especially if you also checked your source code after change....

Change this:
osc_enqueue_style('font-awesome', osc_current_web_theme_url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css'));

Into:
osc_enqueue_style('font-awesome', 'https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css');


Maybe I have 0 knowledge, but I can read and I can't find:
osc_enqueue_style('font-awesome', osc_current_web_theme_url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css'));
in my head.php
Maybe you forgot what did you write in head.php?

My head.php:
osc_enqueue_style('font-awesome', osc_current_web_theme_url('fonts/fa/css/font-awesome.min.css'));

What?

Now I have:
osc_enqueue_style('font-awesome', osc_current_web_theme_url('fonts/fa/css/font-awesome.min.css'));

when I changed:
osc_enqueue_style('font-awesome', osc_current_web_theme_url('//maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css'));
or
osc_enqueue_style('font-awesome', osc_current_web_theme_url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css'));

it doesn't work

Maybe I have 0 knowledge, but I can read and I can't find:
osc_enqueue_style('font-awesome', osc_current_web_theme_url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css'));
in my head.php
Maybe you forgot what did you write in head.php?

My head.php:
osc_enqueue_style('font-awesome', osc_current_web_theme_url('fonts/fa/css/font-awesome.min.css'));