I recommend contacting and have a conversation with them as they are advocate for renters.
This is the state of Minnesota link that details rights, this is the other avenue I would recommend contacting to have the questions you have answered.
Owners have responsibilities and tenants have rights - until you can determine your rights which I know you have try cleaning the wood windows with bleach - that generally will help in cleaning up the windows. Wood windows when covered with screens and blinds retain moisture in the winder months and this tends to happen when the blinds and screens are left on windows.
Best of luck