Is the sponsor a Dutch national? Then you cannot apply online. Please use the written form for Application for verification against EU law family member of the EU citizen.  

Application for a permanent residence permit or an EU-long term resident permit. You have a regular temporary residence permit (type I). You want to apply for a permanent residence permit (type II) or an EU-long term resident permit (type V).

Application for extension of a temporary asylum permit or application for a permanent asylum permit. You have a temporary asylum permit (type III). You want to extend your permit. Or you want to apply for a permanent asylum permit (type IV).  Do you want to apply for an EU-long term resident permit (type V)? Please use the written application form.

Application permanent residence for EU/EEA or Swiss citizens and their family members. This online application is for EU/EEA or Swiss citizens and their family members that have been living in the Netherlands for 5 years.

Application residence documents Withdrawal Agreement (WA/Brexit). This application is for United Kingdom (UK) nationals and their family members who come under the Brexit Withdrawal Agreement. You have lived in the Netherlands with permission for less than 5 years now.

Application residence documents Withdrawal Agreement (WA/Brexit). This application is for United Kingdom (UK) nationals and their family members who come under the Brexit Withdrawal Agreement. You have been living in the Netherlands with permission for 5 years or more in a row.