error on phone interface

[Sentrix]

hi someone please help me, when i watch the demo on my computer on the phone interface it is perfect, but when i watch it on my phone it has some errors, on my home page when i watch it on my phone i cant access the menu at the 3 lines, my title text on the computer interface is white but on my phone it is black

Phone interface when viewed on computer

When I view on my phone it is different and I can't open the menu at the 3 bars.

Phone interface when I view on computer and open the menu

[DitalTek]

Hi,

Can you leave the url store here to help you check?

Through your image attachment i can see the text on main banner will change to black on real device mobile instead of white as on computer, which is mobile device you are checking on?