I bought an Logitech ipad keyboard in April and the #2 key fell off. What do I do?

[iMore Question]

I bought two of these Logitech ipad keyboards in April for my grandsons and black one had the #2 key fall off today. I have a credit card receipt for these. What is the procedure to get this replaced?

 

[SwitchBeach]

Contact Logitech?