I have facing a strange issue on mobile browsers for custom portal - all fields on an edit form are not editable.

1. We created an Edit form for a custom entity which the user should be able to edit to update data in CRM.

2. Enabled entity permissions  and the relevant roles have been given Read and Write permissions.

3 The fields are not read only on the CRM form.

The form works fine on  laptop, however, when I try loading the form on  mobile, I cannot edit it.

The fields are not greyed out like read only fields, however, it is not possible to edit them.

The Submit button works fine.

I tried on both Iphone and Android, on chrome and safari both.

I removed the JavaScript on the form, but no luck.

The entity, the tab, section and fields are are enabled for mobile.

What should be done to make the form editable on mobile bowsers?

Thanks in advance.