Invalid key issue

Is there anyone to help with this issue?

Which TML version?

Of course, we are using the latest version. Version 7.0.14

Can you disable all other plugins and see if this issue persists?

Issue resolved after disabling Postman SMTP plugin.

But this is what happens when Postman SMTP is enabled
You can see this screenshot https://prntscr.com/nz5jrv

Also #038; appear because email is in html format. When we disable Postman SMTP email format appears to be correct and it does not show #038; in link.

I think we really need Postman SMTP plugin. So is there any fix for this so we don’t need to disable Postman SMTP plugin?

Developer discontinued Postman SMTP plugin

https://www.ads-software.com/plugins/postman-smtp/

So we should use a new plugin, right?

I used WP Mail SMTP and it resolved the issue.