My name is Rae and I work for Shopify. Thanks for posting about the troubles you're having with connecting Printful.
Can you tell me a bit more about what's happening when you try to connect the app, or if you're seeing any error messages? Are you having troubles with downloading the app itself? If so, what happens when you try to download Printful to your store via this link?
If you're still running into issues when using that link, there are a few troubleshooting steps I suggest taking before trying to download the app again, such as:
Following these steps should help you install the app correctly. However, if you're seeing any errors when using the app inside your Shopify admin, or experiencing issues with the app elsewhere, please let me know. Depending on the troubles you're having, reaching out to the app developers directly may be helpful, but I'm happy to keep lending a hand in the meantime!
I look forward to hearing back from you with an update on how this all goes!