You should not disable provisioning; that is not the preferred method.
Please leave provisioning enabled.
Instead, the proper way is to use the OBi Expert Configuration on the OBiTALK device portal,
Enter OBi Expert, then find the corresponding parameter and
change it to your desired value (unchecking OBiTALK settings and Device Default for that parameter also).
Making changes directly on the device web page should be your last resort, for example, in
the rare case that the parameter you want to change is not yet available in the
expert configuration page due to version differences.