Layout disturbed on nicepage page on android mobiles

Hi there,

I have created one of my first pages with nicepage joomla plugin. I only need one page, theme is from site, so I use header and footer from theme. Inside nicepage all is looking well, too.

On desktop device my site looks well.

But on my available android devices layout is totally distrubed! Inside nicepage all is looking well, too
Title shown twice, no formatting, submit button, ...

I need the page in few days and have no idea what happens!
Should be:

Any idea?

Best wishes and stay healthy