Each county in Hawai'i has different rules and regulations:
Hawaii County’s Zoning Code requires anyone wanting to operate a B&B obtain a use or special use permit from the Planning Department. Applying for the permit costs about $500.
Statewide, B&Bs are banned on Oahu unless grandfathered in before a 1989 ban went into effect. Maui and Kauai counties require use permits. I see you are from Maui and each area has permit limits see http://www.co.maui.hi.us/1206/Bed-and-Breakfast-Pe...:
Act 204 of the 2015 Hawai'i state Legislature requires all advertisements listing short-term rentals to include a tax registration identification number. Individuals who do their own advertising – online or otherwise – are now also required to include their registration number. The law says citations may be issued to any noncompliant listing site, with fines between $500 and $5,000 a day. Violators could also be subject to criminal penalties, including up to a year in jail.
O`ahu, you must have a permit from the City and County of Honolulu in order to offer rentals for periods less than 30 days.
Again, unfortunately, the City and County of Honolulu stopped issuing these permits in 1989 and has no mechanism to issue those permits and no plans to create a process (why? Well, the rich hotel and tourist industry had lobbyist to keep the 99% of business in Waikiki vicinity, but hey that's another topic).
All that is mentioned, protect yourself. Start the eviction process.
For example, you must give you five days’ notice to tenant to pay the rent or leave (Hawaii Rev. Stat. § 521-68) before filing an eviction lawsuit. This is for rental payment, sometimes days of notice can be 10 days or more. Seek a landlord lawyer for legal advice.
In, HRS Section Landlord's remedies for absence, misuse, abandonment and failure to honor tenancy before occupancy
(c) Unless otherwise provided in the rental agreement, use of the dwelling unit by the tenant for any other purpose than as the tenant's abode, or nonuse of the dwelling unit, constitutes a breach of the tenant's obligations under section 521-52 and entitles the landlord to proceed as provided in section 521-72.
Here is section 521-72:
HRS Section Landlord's remedies for improper use.
(a) If the tenant breaches any rule authorized under section 521-52, the landlord may notify the tenant in writing of the tenant's breach. The notice shall specify the time, not less than ten days, within which the tenant is required to remedy the breach and shall be in substantially the following form:
No allowance of time to remedy the breach of any rule authorized under section 521-52 shall be required when the breach by the tenant causes or threatens to cause damage to any person or constitutes a violation of section 521-51(l) or (6).
Sorry for the length. You can look up more here: https://www.mauimapp.com/toc/govlantentoc.htm
Best of luck and keep us posted.
Much aloha,
Danny