JQuery Conflict???

I am having a problem that I just cannot figure out. It has probably something to do with some sort of code conflict (maybe jquery?), but I am not sure. I will try to describe the best I can. I would appreciate any help.

1. This is a demo page http://ilovetheweb.us/fundifydemo/start-a-campaign/ that has a “Show Terms” link at the bottom. When you click on it, the Terms of Use is displayed, and when you click “Hide Terms” at the bottom, the Terms of Use will “collapse” again.

2. Now on the live site at https://qlique.net/start-a-project/ there is the same link at the bottom, but it is in Japanese saying 利用規約を表示する (= Show Terms), just above the last checkbox and the two turquoise buttons. When clicked, it should expand and stay expanded just like on the demo page above, but it ends up “auto-collapsing” right away again.

I have looked and looked for a solution, but I just cannot figure it out. I have tried disabling all plugins but that did not do the trick either. Any help would be much appreciated.

Please note: I have temporarily set the live site to not require any login so for anyone who would be so kind to look into this can directly access https://qlique.net/start-a-project/ However, eventually, I will need to require everyone to login again.

If a login page appears, please enter:
Username: test
Password: testtest

Again, I would appreciate any help.