“Disagreements” is a placeholder for possibly anything, even “I wanna stream Wii games but we don’t have perms” could be a “disagreement”.

She actually even mentioned some sort of disagreement in her reasons for leaving:

I had been consulting the office about these issues for several years. However, resolving them would have required a fundamental review of the organization's internal structure, and I ultimately judged that it would be difficult for me to continue my activities in a sustainable way.

So, while obviously still being vague, she was even more clear than usual.