Church is part of RMN and actively working for change here.
Church's actively enforced policy is found in the above "what we believe" link. The church is within a denomination that does not allow same sex marriage. Their marriage forms refer to "bride and groom" and it does not state that they are willing to marry same sex couples.
This church's website contains affirming language, but its denomination is non-affirming and its website does not contain language indicating that it will actively resist its denomination's non-affirming policies.