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What platform is it? Android or iOS, it should work with your master password or Posting/Active private keys. Have you tried latest version?!

I have the needed key, I tried them on Android 4.1.2 ( don't know the version of other one). I put the username and the key, when I want to press the bottom, I get nothing, no error , no action, literally nothing, and it is the latest version of steemit , maybe it is android version I don't know

You mean latest version of eSteem, I hope, otherwise we might be talking about two different things/issues. After you fill out username and password, please ensure to tap on blue Login button. If you have screenshot, please do share, that would help. Thank you!

I uninstalled the app and installed it again from playstore , now it is sticking at this point for 10 minutes now:

maybe it is just my cellphone

Oh right, thank you for screenshot... please remove first @ letter, just use your username meysam

This reminds me I need to sanitize out @ symbols when accepting usernames in my steem-based software.

now I get user/pass incorrect :)), I am sure my key is correct, I could login with it through the browser

maybe I should try desktop one and let the mobile version be as it is

I think, we can use small improvement on login page by having show/hide password feature so you can check if password entered is correct one. There might be extra character at the end or beginning. Please try to type in manually, if nothing works, i have made note of this so that we can improve logging in process in future updates. thanks!

typed it manually , something is wrong I guess, show/hide feature is going to be very helpful, thanks anyway for your attention