I didn’t manage to change the slider text appearance, have bought a fonts plugin but that did not help either. Seems that these texts are not standard H1-H6. What a mess.
As is: “Willkommen bei anonyfy” and subline “the new standard for fair and bias-free recruiting” is shown in WHITE and UPPER CASE LETTERS To be: “Willkommen bei anonyfy” and subline “the new standard for fair and bias-free recruiting” in color #3D89A2 and STANDARD CASE, FONT Poppins, Stile Light