Not able to visit neighboring towns on Sims Freeplay?

I have Sims Freeplay on my Kindle Fire and my sister has it on her iPhone. When at the Party Boat, I'm able to visit her sim town, but she isn't able to visit mine. My town will show up for her, but nothing happens when she taps it to visit. Is this a fixable glitch?

Have you saved to the cloud?
I wasn't able to visit a few of my neighbors and it turns out that they weren't saving to the cloud regularly.

There's an unofficial forum that's great for questions and tips:

http://simsfp.perturbee.net