Unable to create Rating Styles(not save nothing)

Dear Support,

as per subject I’m not able to set the Addon because it not save the Style after creation.

eg : I go to Multiratings > Rating Styles , fill all and when I click on save it clear all field and not save the style.

I’ve tried to :

1 – Search first on a forum (i’ve found a post that seems have the same problem but only with chrome) I’ve tested also in safari and the behaviour is the same. (soory for double post)

2- I’ve Reinstalled the addon but nothing is changed.

Thanks In advance and best Regards