Which countries can use BitPay?

Could you please provide a comprehensive overview of the countries that are able to utilize BitPay for their cryptocurrency transactions? It would be beneficial to understand if there are any geographical restrictions or limitations that may impact the availability of this service. Additionally, is there a specific list of countries that BitPay supports, or is it a more global reach with certain exceptions? Clarifying this information would be extremely helpful for those interested in exploring this option for their financial transactions.