Hosting & Multisite

I noticed that when I create a new site in hosting and choose the option to have it as a multisite, the installation completes as a single site. I have to convert it to multisite after installation.

Also, on 2 of the 3 sites, the admin user changed to “testing1” with the email address alfonso[edited email].com. I noticed this when I suddenly couldn’t log in anymore and viewed the users table in database. My username no longer existed and only this “testing1” existed. I deleted the one site from the hosting dashboard and recreated it, now I have my correct user details. The other site still has the “testing!” Username - I guess I’ll have to start over there too...will it happen again?