Why don't I see an edit button under questions?
I can't see the
edit option under the posts. Did I reach a limit or something? Is there a maximum pending edit request size?
Looking through your edit history quite a few have been rejected for being too minor. A series of rejected edits causes a temporary block on new edits.
Another possibility is that the suggested edit queue is full - there can be a maximum of 200 suggested edits at any one time.
At the time of posting this answer this limit has not yet been reached so that is not the problem in this case but that is valid possibility.
If you do not see the edit button, this could mean that there is a suggested edit pending and you do not have the privileges to approve suggested edits.