Thank Reviewer email is not showing up

Dear All,
Need some some. The thank you email to reviewer does not show up after editor read the review and confirm. There is nothing happening after clicking. When i inspect, there is no errors too. All other emails are okay.
Currently, editor has to send manual emails to reviewers. Could you please help?

Hi @thana,

I see that you have posted about this here: Thank you email to reviewer doesnt come up after clicking read and confirm - please do not post duplicate posts on the forum, as this goes against our guidelines.

We do have some general advice on email troubleshooting here: - that may be a good starting point.

Can you please verify what version of OJS you are using (e.g. 3.3.0-13)?

PKP Team

Apologies cause I resend. this is because i did not receive any respond from my previous post.

The version I am currently using is

Thank you