Lancr theme, when viewing blog posts on Android, keyboard shows then hides

I am new to wordpress, created a basic blog using the Lancr theme, when I view it on my pc all is fine, I can type in the comments section on blog posts, however, if I view it on my Android mobile the keyboard flashes on then off and I am unable to leave comments.

Searching around there are suggestions regards a resizing issue but I don’t knowl where to start to look to fix this issue.

The page I need help with: [log in to see the link]