Plugin is installed. configured and working well, however

Plugin is installed. configured and working well, however just noticed that for logged out users, the "login url" link on the website front end page message alert, is to a default wp-admin address for the site.

As we have configured our site so that all visitors login at "sitename.com/my-account/",
can you therefore advise in which "incub-support" file, we can find / edit this URL link?

Thanks