1167. How to Spell Check on Google Blog

 https://support.google.com/blogger/thread/27938693/my-spell-check-in-blogger-disappeared-how-can-i-find-or-restore-it?hl=en givens these procedures:

If you are using the Chrome browser please make sure the spell checking settings are turned on:

1. Open chrome and click the following link chrome://settings/?search=spell+check
2. Scroll to Language setting section
3. Across from spell check make sure the toggle is in on position

Kindly share  if you are experiencing the issue using a different Internet browser.

Thanks to the author of that! It works.