If a personal protection order Singapore is issued against you, it is very important that you obey it. If you do not obey it, you have to face imprisonment, a fine, or both. If there is a PPO violation in the case of child custody or divorce, the judge can consider.
The PPO has a list of some specific things you can do if you are an accused. For e.g. if the PPO specifies that you cannot contact the Petitioner, in that case you may not do it, even if the petitioner wishes you to contact first. As only you will be violating the PPO and can be punished by the judge for violating it.