I'm not able to log to my blog

I’m trying to log to my blog but I’m not able
Not sure what is the issue, and when I try to reset the password I’m getting error message:
The e-mail could not be sent.
Possible reason: your host may have disabled the mail() function.

I delate all the browser cookies and history. And tried more than browser
Your support is highly appreciated

My Blog
https://www.wainmaaro7.com/