Hi @Kate-And-Mitch0
I can see you're new to this community even though you're an established host, so may not realise that Airbnb makes it clear that this community is for hosts and guests and shouldn't be used to promote business services such as co-hosting, marketing, cleaning etc.
It helps avoid our community looking like one stream of advertising.
You'd be better developing a marketing plan for your co-host business and investing in advertising to reach those hosts you have identified as your target market.