With the latest spike of mining difficulty exceeding 14% (https://bitcoinwisdom.com/bitcoin/difficulty), while the price of Bitcoin continues to decline, the payout was lower than the maintenance fee, which resulted in the balance not increasing and remaining the same. This means that your balance will neither decrease nor increase. Also, due to the fact that contract payouts are lower than maintenance fees, forecast revenue shows zeros.

According to our Terms of Service, the mining process continues while said mining is profitable. This means the Mining process will stop if the Maintenance and Electricity Fees become larger than the Payout. If mining remains unprofitable for 21 consecutive days the Service is permanently terminated (Hashrate type specific). During the consecutive 21 day period, Payouts and Fees will also be temporarily stopped. If during the suspension period, the Contract-related mining factors (such as the exchange rate and mining difficulty) that are outside of HashFlare’s control will change favourably, making mining profitable again, the Service will be unsuspended and contracts reactivated.

actually it can be calculated, but myself personally doesn't hope it to be terminated lol

Hashflare bungkus-ed gg