Problem With Test Emails

Replies: 0

First I love your plugin and use it on so many websites. Not sure what’s going on with this domain and I keep re-adding it and no luck. I see the Mailgun Forbidden and over at Mailgun there is no reason why.

Versions:
WordPress: 5.7.2
WordPress MS: No
PHP: 7.4.11
WP Mail SMTP: 2.8.0

Params:
Mailer: mailgun
Constants: No
Api Key / Domain: Yes

Debug:
Mailer: Mailgun
Forbidden