Anything could be true.
Just because an agency calls itself “Catholic” doesn’t mean it is. In fact, in Canada “Catholic” schools are state/public schools as I understand it, and a brief look at this children’s agency website seems to indicate something similar-- is a government funded agency, but also states it is a part of Catholic Charities of Toronto.
Homosexual foster parenting and adoption violates the directives issued by the Vatican.
What can you do? First call the agency and ask its policies. If it turns out to be true, write to your Bishop, to the Catholic Charities organization, and to the Vatican.