Multiple account abuse and endorsement fraud.
Our Terms of Service(excerpt):
"In order to access certain Nexus Mods services, you must create and utilise a singular account (i.e. one account per person) consisting of a username, email address, and password. Households or facilities from which multiple users (and therefore accounts) may access the sites and services are encouraged to inform staff to ensure that there are no potential misunderstandings in the case of moderation review. More information can be found in our Moderation Policy. Users who create multiple accounts may have any or all of those accounts terminated with other measures being taken to prevent such abuse as appropriate."
This member received 0 informal warnings and 0 formal warnings before they were banned