How do i login wechat

Maybe, try setting-up a second Gmail account, then send transfer) your emails from the old username account to the new username account. If this works, then either try deleting the messages from the old gmail account and transfer the messages from the new gmail account back to the original gmail account ... or ... just delete the old gmail account if you successfully transferred them to the new gmail account.

Most likely you entered username and/or password incorrectly. I would make sure you can login to your gmail account from a PC/Mac first, then use the same username/password on the mobile device.

-Check if you have locked your CAP.
then try your password again.
-Did you type your email properly?
if not then well, you should type correctly.

my problem is my g mail accont is not open

Signing in to your Gmail account gives you access to your email messages.
Gmail Web-based email functions as most email services do, with the option for users to send and receive email messages, store contacts and organize messages.
You can opt to store your Gmail login information when signing in so that you do not need to re-enter it each time you access your email.You can access your Gmail account on a computer or a mobile phone.

Open a Web browser window.
Click the address bar and enter "gmail.com." Press the "Enter" key.

Enter your Gmail username and password in the indicated fields.
Check the "Stay Signed In" box to save your username and password for future logins.
Click "Sign In" and wait for your Gmail account to load.
Mobile Phone
Press the "Menu" key on your mobile phone and click the "Browser" icon.
Click the Web address bar and enter "gmail.com."
Enter your Gmail username and password and click "Sign In."

Signing in to your Gmail account gives you access to your email messages.
Gmail Web-based email functions as most email services do, with the option for users to send and receive email messages, store contacts and organize messages.
You can opt to store your Gmail login information when signing in so that you do not need to re-enter it each time you access your email.You can access your Gmail account on a computer or a mobile phone.

Open a Web browser window.
Click the address bar and enter "gmail.com." Press the "Enter" key.

Enter your Gmail username and password in the indicated fields.

Check the "Stay Signed In" box to save your username and password for future logins.

Click "Sign In" and wait for your Gmail account to load.

Mobile Phone

Press the "Menu" key on your mobile phone and click the "Browser" icon.

Click the Web address bar and enter "gmail.com."
Enter your Gmail username and password and click "Sign In."

First try going opening your browser of choice and going to mail.google.com. Ideally the page should load and you should be able to log in there. If your page times out (you get an error instead of the login page) then it's possible that some program on your computer is blocking the connections, or that your router is blocking the connections. Try ending any programs you're not using (including any that might be hiding in the icon tray) one at a time until you can get access to gmail again. If you can't find any that are blocking it, it might be a setting on your router.
Any additional information you can provide would be helpful.

what do you mean when you say you cannot receive emails? are you able to login to your gmail account?

if you are able to login to your gmail account - make sure you change the login password right away. use a strong password - which means it should be atleast 8 characters long and contain at least 1 upper case letter, 1 lower case letter, 1 special character and 1 number. :-)

if you are not able to login to your gmail account then try using the "forgot password" option.