Why data not saved from mobile

Hi, I’m having trouble saving a text “Family ID” when inputted (and SUBMIT) using mobile. It works fine if I input the text in Glide builder on my Mac laptop. I’m struggling with this for the entire week. Please help. More info - Using a “Show detail screen” to get the input from the users for the text field “Family Last Name” which should get saved in the field “Family ID” in the “Users” table.

I don’t follow exactly but your screen or the previous one should be sourced to a table where Family ID is available as a value. When you submit the form, add a Screen value (it’s a hidden value associated to the context of the screen) to write the value of Family ID in the appropriate column.