Removing underline below links.

Hello,

This issue has been fixed in our latest version or theme, please try to update the theme to the latest version 2.0.2 to fix the issue.

Or try to add the below CSS code from the Appearance > Customize > Custom CSS, and check.

.single .entry-content a, .page .entry a {
text-decoration: none;
}
.single .entry-content a, .page .entry a:hover {
text-decoration: none;
}

Hello, I tried this but it didn’t work.
Custom CSS seemed to have been overridden.
I check it with inspect tool of browser.

single-post:not(.elementor-page) .entry-content a, .page:not(.elementor-page):not(.woocommerce-page) .entry a {
cursor: pointer;
text-underline-offset: 3px;
text-decoration: underline;
text-decoration-skip-ink: all;
-webkit-transition: all 0.3s ease;
-moz-transition: all 0.3s ease;
-ms-transition: all 0.3s ease;
-o-transition: all 0.3s ease;
transition: all 0.3s ease;

Your code looked like this but crossed out.

.single .entry-content a, .page .entry a:hover {
text-decoration: none;
}
<style>
.single .entry-content a, .page .entry a {
text-decoration: none;
}

Hello,

Try to replace the above code with this one.

.single .entry-content a, .page .entry a {
    text-decoration: none !important;
}
.single .entry-content a, .page .entry a:hover {
    text-decoration: none !important;
}