Undefined array key “klaviyo_sms_subscribe_checkbox”

Hi there – Would you mind creating a ticket with our support team so we can troubleshoot that issue with you?

You can create a ticket following these steps: https://help.klaviyo.com/hc/en-us/articles/115001002272. I’d recommend a ticket vs chat in this case because it’s a harder issue that will likely need to be escalated. Thanks!

Hello! We just released plugin version 3.3.3 that should resolve this issue: https://ww.wp.xz.cn/plugins/klaviyo/. Note that the error was benign but we definitely don’t want to be logging extraneous errors. Thanks to you both for bringing this to our attention.