You are unable to sign into your Facebook account on Nintendo Switch.
The error code 2810-1500 is received.
What to Do:
Restart the Nintendo Switch console by holding down the POWER Button for 3 seconds, then select "Power Options" > "Restart."
Once the console powers back on, ensure the console connects back to the wireless network.
When connected you will see the wireless icon in the top-right corner of the screen with at least one bar of signal strength.
If the error code persists, try again later.