RepairPal Certified shops can diagnose and repair your 2006 Volvo XC90. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
On the earlier XC90s you pulled the cover/washer nozzle straight out towards you and unclipped the cover from the nozzle. I assume this model year is the same. Just go slow and be careful so you don't break the nozzle.