I have submitted a paper to an SCI index journal on Jan 15, 2020. After writing to the handling editor a couple of times, they said that the paper was under review. On Dec 10 2021, I received an email from the journal asking for a revision. I revised and submitted it again to the journal.
But, I have not heard back from the journal yet. Now, it has been over 2 years since my paper was under review. I wrote to the journal and the handling editor 2 times but none replied.
Previously, when I wrote to the handling editor, I used to get a reply after 5-6 days. Now, I don't even receive a reply. Why is the editor behaving like this toward me?
What should I do now?