I can't log into my WordPress admin account..

Hi, I can’t log into my wordpress admin account. Whenever I try to use my login details to log in, it looks like it’s successfully logged me in, but whenever I try to click something like “dashboard” or “add post” it immediately logs me out and takes me to a page that I designated that says “you have logged out”. I tried clearing my browser cache, cookies, nothing works. I tried resetting my password but it didn’t register or something so when I tried to log in with the new password it says incorrect password. I went into phpmyadmin and changed my password manually through wp_users, which worked but got me into the same predicament of unable to do anything or click anything on my website without it taking me back to the “you have logged out” page. I am using a plugin called wishlist member if that makes any difference. Thanks.