if you just opened that email you will find it’s status written inside
i also as said in prior reply
the problem seems to be from the xcore plugin because when i deactivated it i think it worked
please make more testing and make sure that everything is working correctly
its almost a week now and solution has been provided
also if the problem is with the other emails status how you explain that the first order email (processing email with 8theme email builder is on) is delivered with out any problems and for the other statues it cannot deliver ?
EDITED1:
i have seen same problem i think in the past week in the topics page
also the order in the screenshot is old and i just updated its status
