Can I pay for 60 days of NaaS subscription fees in one transaction? StrongBlock January 10, 2023 18:27 Updated No. NaaS subscription fees can be paid in 30-day increments. You cannot pay for more than 30 days at a time. Related articles What happens if I do not pay my monthly NaaS subscription fee? What are the StrongBlock fees? How many days in advance can I pay the NaaS subscription Fee? What are Ethereum Legacy (1.0) NaaS Subscription Rewards and how do I get them? Can I unmine at any time?