Like in your previous question: the problem is that your website has been migrated to premium hosting.
I don’t know how, but apparently something was changed so iFastNet’s premium hosting is allowed to show websites published under our license.
But the builder is still integrated with InfinityFree. If you make changes and hit Publish, those changes will be published to your InfinityFree account. The changes are not published to your iFastNet account.
I still stand by what I told you yesterday in your other topic:
If you want a smooth experience, either stop using Site.Pro or get a premium account at Site.Pro.