I installed Matomo on a subdomain using Spectaculous. Everything went fine, but I forgot to write down the Admin name (…stupid I know). I then uninstalled it according to the instructions in the link given below. The was no issue removing all the files or deleting the DB. When I used Spectaculous to re-install it I got this message" * An installation already exists at https:.com as per our records. To re-install the application please uninstall the existing installation!". There is nothing left to delete, so how can I re-install?