No Email Notification With 2Checkout

This started just a week ago - all orders paid using 2checkout failed to trigger the 'processing' email notification (sent to customers and vendors). We did not change any settings in cs-cart nor 2CO and I double checked all settings. The issue only happens when 2CO is used as payment processor. Has anybody else experienced this?

Using 4.3.10 multivendor

This started just a week ago - all orders paid using 2checkout failed to trigger the 'processing' email notification (sent to customers and vendors). We did not change any settings in cs-cart nor 2CO and I double checked all settings. The issue only happens when 2CO is used as payment processor. Has anybody else experienced this?

Using 4.3.10 multivendor

Is the status of such orders correct?

Is the status of such orders correct?

Yes and after further digging I found a common denaminator....the issue happens if the transaction consists of multiple orders (from different vendors).