Sam Edelman Kia block sandal lilac purple wedding guest strappy sandal size 10

Sam Edelman Kia heel lilac purple lavender wedding guest strappy sandal size 10 Purchased on poshmark from a luxury resaler (reason for the permanent marker strike through on the brand logo) but they don’t fit. Sizing is a bit small. I am a true 10 but would be closer to 10.5 or 11 in these shoes. In brand new condition