Same sync problem on the ipad 4. None of my other toodla mobile apps have any problem.
On the tasks page I get an error 1001 and on the sync page "please check your email and password"
Restarting app doesn't fix it neither does rebooting.
However it will randomly decide to accept the details and sync. Doesn't work 90% of the time though.
Only been happening 4 days.
Just seen "key did not validate" on task sync progress bar on task page.