I can not login into my website

I had been trying to login to my website but experience problem. This is login https://www.smeinfo.com.ng/wp-login.when I submit it,it bring this error:
Not Found
You tried going to https://smeinfo.com.ng/wp-
login , and it doesn’t exist. All is not lost! You can
search for what you’re looking for.
The funny thing is that it bring my site with error or error 440
Please kindly help me to look at it.