Hello,
1.
.header .wpml-ls-statics-shortcode_actions .wpml-ls-current-language a {pointer-events: none;}
2.
.mobile-nav #lang_sel_list .wpml-ls-current-language a {
color: white !important;
pointer-events: none;
}
About changes, it would be better to contact the plugin support. If previous code does not work after the update, it means that some classes were changed. Please change old css code to new.
Regards