Hello @da bear,
I wish I could make it better and I hear you. I would like to thank you for sharing your experience and how you wanted to resolve this by trying some of the troubleshooting steps.
Since the issue is still unresolved, may I ask first what if the product you're trying to connect with QuickBooks Time? This way, I can help you figure out what is this issue all about and lead the way to the integration process.
Keep me updated in the comments. Hope to hear from you soon. Take care and stay safe!
