Enumerator is seeing loading error when trying to collect data through tablet (enketo)

Hello Kobocollect Community,
I have been testing my survey with a group of enumerators (6 lenovo M7 tablets), using enketo forms not the kobocollect app, and many times they receive this message in the picture attached, and in the database, the submissions are recorded but empty of data. However, when they try filling the survey using a computer for example, it works. Where is the problem?

Thanks!

The username: xxxxx
Project name: Farm Survey - استبيان المزرعة

Welcome to the community, @gaber_abdellatif! This post discussed previously should help you solve your issue:

Thank you for your reply.