Hi Reza,
You need to define service/protectedwebmethods = DEFAULT not SDEFAULT.
You can check the behavior by opening the JSPM.
Try to restart the SAPPJ1_<xx> on both the cluster node after setting the parameter
service/protectedwebmethods = DEFAULT
Then take the restart of SAP system.
Also paste the screenshot jspm.
Its a known issue and it will get resolved if you follow the instruction prperly.
With Regards
Ashutosh Chaturvedi