Try importing only the receiving descriptor in Sparrow Wallet, like this:
You don't need to import the change descriptor, Sparrow wallet will automatically calculate the change path using the extended public key.
See, in my case (using another descriptor I just generated for testing) Sparrow correctly imported both receiving and change addresses from the descriptor containing the xpub:
Code:
wpkh([6ac77e84/84h/0h/0h]xpub6D9yC3ibKEDbLjV8fcF1AmQyBXuKErT13KeW4cVTqS7e6XmaoEMzJeU1gyHUUHwMx5F6utw4VkSB416rXrPCgRi1tLWxSHbZoWjv281oEKc/0/*)#hrntfr65
You don't need to import the change descriptor, Sparrow wallet will automatically calculate the change path using the extended public key.
See, in my case (using another descriptor I just generated for testing) Sparrow correctly imported both receiving and change addresses from the descriptor containing the xpub: