"Repeat this group if necessary" not appears on my samsung tablette


I try to create my first formulary. I’ve had many problems…
First, the ranking question and the matrix question does not work. I stop to try use that.
I wanted to replace that with the groups and the option “Repeat this group if necessary”.
All groups with this option not appears in my tablette…however it’s ok in windows version.

Please, can anyone help me?