I'm also having issues. I've had a Lowe's credit card for many years through Syncrony. This is accessed through the Lowe's website.
I recently got a Husqvarna account that's accessed through mysynchrony.com.
If I try to link my mysynchrony account, it doubles up my lowes and husqvarna credit cards and shows them twice.
If I delete one of them, it removes them both.
