thank you for the proposals. my very first comments:
#8 - too dark backgroung
#5 - too dark background
#5, #8, #7, #4 - what are the symbols about? for me they are too abstract
#5, #8, #7, #4 - for audience, who does not know us it is not clear, what is our core business about (mobile payments) - is not clear from "mobiletech" text, not clear from the symbol...