iMessage Notifications not working

I recently set my date on my phone months ahead so i could take advantage of a glitch in a video game, but ever since around noon today, I am unable to receive iMessage notifications. I also set my time forward months ahead yesterday and this didn’t happen. I really need help to fix this because I’ve already missed many important messages from my mom. I’ve tried powering my phone on/off, turning notifications off, and turning iMessage off. Please reach out to me