This is not directly related to LeoFinance but to Hive. To be able to write to the Hive blockchain, you need resource credits. These are generated depending on your HivePower. So if you empty the entire account, you can no longer execute transactions.

This is quite normal in the blockchain area. If you want to make a transaction, you have to pay a fee. On Hive, the fee is free in the sense that the resource credits are recharged and you initially receive a delegation that generates enough HP for you to use the account.

https://hiveblocks.com/@leonordomonol <- There is the block explorer

e:/ post your name and I delegate you 5 hp