But when i enter BTC amount it occur "not enough fund" even if i try to send a much smaller amount including Fees
It can happen if you have 0 HEAT, because you need at least 0.01 HEAT for any transaction including a BTC asset withdrawal transaction
until someone manualy send real BTC to my acc?, reminds me of NXT AE with multigateways except its not a full automatic process, controled by heat audits?
Correct. Manual audit is a temporary solution to enable usage of the Heatwallet BTC gateway during this time while full automation / decentralisation is still under development.
Ive still more than enough Heat for any Transaction Fees, believe me. But what me concers is the Fact, that you are right now the point of failure. Arent you nervous?, you should fix your problems very fast.