I think its just the wording that is different. The meaning is the same.
Chat with our AI personalities
"you may" means that you have permission ( to do something) . "you can" means that you are able (to do something).
Wasn't able means not having the ability to do something. Didn't means you could have done it but did not for whatever reason.
Difference between paging and what?
just difference
What is the difference between strong and brave