Task in the tutorial aren't saved


I followed every step of the tutorial and my page was created in the domain artismine.meteor.com, and yes it is, but when you insert a task is not saved, by reloading the page disappears, coming from another PC nothing shows me not understand why not saved.

He had previously created the tutorial, but I reinstalled my system (I switched of kubuntu to ubuntu mate) and now works for me, I have a statement within hours about meteor and I need it to work


I have done several times the tutorial, reading and doing step by step tasks appear momentarily, to refresh the page they disappear.
The current domain is tomismine.meteor.com


Show the code and which tutorials did you learnt?


Did you check that your allow rule is in place?