Your Protection From Abuse order may or not be able to be modified in Pennsylvania. It depends on whether the order's a temporary or a Final Order and where it stands in the process. If it's a Temporary Order, depending on the circumstances, it may be able to be modified, say, often by the agreement of the parties, the plaintiff, the plaintiff's attorney, the defendant, the defendant's attorney. Some more common modifications that would be made through a Temporary Order would be provisions to allow for a defendant to, say, have custody of the child or children or to allow the defendant to retrieve personal belongings from the residents where the defendant would be, say, potentially evicted or excluded for the Temporary Order. It would have to be approved by the judge.
If it's a Final Order, you have 10 days from the time that the judge issues the Final Order to ask for a reconsideration of that order so there is a limited period of time to seek that Final Order be modified or changed, including the decision itself. Having an experienced Pennsylvania PFA attorney in your corner will you best understand and navigate the PFA process. If you're a defendant or a plaintiff of the matter, they should be involved as early as possible in the case.