access token and hosting plan

Hi,

we are new on wordpress so we ae just learn something about it. we have non-profit organization and we have some questions

1 – we have 9 types user roles and lots of users, so all user can their for thmeself or this pluging only for administration?

2- activated and wanna try to instagram, just click to logng and get access coing and i saw your url, are you storing this information? how its work, i affraid. I said we are new on wordpress.

3 – When using this pluging such for instagram, pictures downloading our media library or just calling with URL, we have limited hosting plan. How it works?

sorry for my english
Thanks