I need to change partners on my fountain the other person isn't helping to build it! Can I change partners?

No, you cannot change partners during an event. Once you have accepted an invitation, you are committed to that player until the end of the event. So, choose wisely. Some experienced players will try to partner with players they have partnered with in the past, or people they are sure will complete the event. So, build your MonopolyGo! friends list and choose carefully!

Unfortunately no, once you choose partners, you’re locked in. One good strategy that I have used is to go through the forum so you can get to know other players so you will be able to choose partners that will help during those events