Your response again ignores the suggestion I gave that puts you in complete control of the editing time.
This has nothing to do with your being a non-native English speaker. Just like many native speakers, you've developed a lazy habit and won't retrain yourself to avoid the problems created by the lazy habit. You would have the same complaint with the editing time if you were composing, reviewing and editing your posts in Mandrin, Spanish, English or any other language; even your own native language.
You have a desire for perfection in your posts and don't always catch errors and needed revisions before the editing clock expires. There's nothing wrong with that. Many of us have a similar standard of perfection for our writing. However, rather than using an independent software to compose and edit your posts so that you'll have unlimited editing time, you're requesting the A2K software be altered to fit your individual needs.
The solution to the problem is in your own hands. Make use of Word or Notepad or any other word processing software to compose, review and edit your posts before copy and pasting them into the form on A2K.