When trying to connect these channels, are you greeted with an error, or something else? If you can provide more details on the issue that will help determine the next steps.
We will need as much detail as possible in order to help you troubleshoot the issue.
I'm having a similar issue with Pinterest. I'm stuck in a sign in loop where it asks me to "connect Pinterest account" and then opens pinterest to a "give access" screen. I click "give access" and it brings me back to the first screen asking to "connect pinterest account". I have tried on multiple devices including laptop, reinstalling the app, deleting and creating a new pinterest account, restarting my device but nothing has helped. In the attached video I only press those two buttons and you can see it just brings me back to the first page.
Thank you for the detailed description of the steps you've tried to troubleshoot the issue. In this case, I would recommend reaching out to Shopify Support for further assistance. You can do this by logging into your account through our Help Centre here.
Email responses will take between 24-48 hours. You can start a live chat or register for a callback through our Help Centre. Callbacks are available based on volume, so if the option does not appear, then you can try again later or use the chat feature.