Hey, are you using a Klaviyo sign up form popup to collect emails?
Also, as a best practice, turn off Smart Sending on the welcome email:. https://help.klaviyo.com/hc/en-us/articles/115002779311-Guide-to-Smart-Sending-in-Klaviyo#flows7
Hi @Jeff,
Thank you for sharing this question with the community.
I am very sorry to hear about your trouble receiving support. This is certainly not something you should get used to, we are always more than happy to assist you with a timely reply. We are also continually expanding our support team and timezone coverage to best serve our customers all over the world. I am glad that you came to inquire in the community and I am more then happy to help you get this squared away.
In addition to @Mailbox Manny’s suggestion, I recommend reviewing other potential reasons for your issue and the solutions, outlined in the thread below: