Hi there!
Sorry for your experience. Have you changed your PHP version recently?
I was trying to check your site, suddenly it's gone.
Here is what CSS need to change one of the feature box overlay color(second one):
.sp-kidzy-featured-list .sppb-row>div:nth-child(2n) .sppb-addon-feature {
background-color: rgb(39 59 146 / 90%);
border-bottom: 5px solid rgb(39 59 146 / 90%);
}
.sp-kidzy-featured-list .sppb-row>div:nth-child(2n) .sppb-addon-feature .svg-overlay {
color: rgb(39 59 146 / 90%);
}
You may try this in your custom CSS field of the Template Options. You can use your desired color code above too.
Best Regards