What cryptocurrencies can I buy at bitrefill?

Could you please tell me which cryptocurrencies are available for purchase on the bitrefill platform? I'm interested in exploring various options and would like to know which ones are currently supported. Additionally, I'm also curious about the purchasing process and any specific requirements or limitations that may apply. Could you provide more details on this? It would be helpful if you could outline the steps involved in buying cryptocurrencies on bitrefill, as well as any important considerations I should be aware of. Thank you for your assistance in this matter.