Complex sentence: The company strives to solve three fundamental problems that were faced by group practices wanting to deploy an EHR in the period 1985--2010: lack of ease, lack of flexibility, and affordability.
Split into simpler sentences: The company strives to solve three fundamental problems that were faced by group practices wanting to deploy and EHR in the period 1985-2010. These problems are-lack of ease, lack of flexibility, and affordability.