Bug with multisite paths

Hi,

there seems to be a bug within the plugin:

I have a multisite with the sub-sites in sub-directories.

When I create a “temporary login” for a sub-site (!) then the temporary login, created with this plugin, looks like this:

https://mysite.de/testsite1/testsite1/wp-admin/

and leads to a 404 error, of course,
instead of this:

https://mysite.de/testsite1/wp-admin/

(On the main site of a multisite the plugin works fine.)

Is it possible to fix it, please? Thank you.