I am having problems pairing my new iPhone X with the square reader. I have just upgraded phone and it used to work perfectly with my iPhone 7. I have contacted support but they couldn’t really help...
An iPhone X should be no problem to connect via Bluetooth. Step by step troubleshooting isn't ideal over a forum so your best bet is talking to support. I'm not sure what they told you or what steps you did. here is a troubleshooting guide. https://squareup.com/help/us/en/article/5673-square-contactless-and-chip-card-reader-troubleshooting
This problem has been fixed with an update to a new version of the iphone x opperating system....
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