I am running wordpress with woocommerce and theme_my_login plugins. When a user registers on my site it sends them a confirmation email and then they can click to activate account. Problem is when the user goes to login they get an error of incorrect password. If the user uses the forgot password link and resets the password then they can login without any errors. What might cause this problem? Is the password being encrypted with the wrong method?

I went through the registration process and checked the string in the php users table.

password in php table after registration: $P$BF/gIt6dFfBBuNx6rP41Qv3i71TUie1

password in php table after change password to same password: $P$BxpByDbNU3vr3sytTOcbzttp1tOodH1

Do Theme my login and either woocommerce or wordpress use different encryption methods?