My BTC address is changing every time when i open and close it
I would like some clarification. I believe that I know what you meant, but your wording leaves me with a question. The address should not be changing just because you open and close Electrum as you specifically posted. Now if you are conducting transactions Electrum will start using a new address so that you don't use one twice (unless you want it to of course). However; opening and closing Electrum is not the same as using it for a transaction. Not trying to nit-pick you here, just want to make certain you don't have something going on. Trying to help only. I am not a grammar guru. If you read my posts you'll see I suck at it. LOL!