I think we'll give you the benefit of the doubt and assume you are not promoting here through a question it appears to me that there is a different issue at hand.
Could be branding, positioning, market focus, pricing or wording... Could be a number of things more suitable for a call I think.

Also,
Angel.co is a community, it doesn't call itself that. You can label whatever you wish but it has to embody how your customer base feels, often times this issuing does not come until you have a large user base and they themselves will give you the answer.
Branding is often a waste of time for most startups because the fundamental value of a brand come through user satisfaction & engagement. Here is where growth hacking comes in for most startups.

A marketplace is a common name for digital services however unless and until you have an established branded service that people know you for a marketplace label is more confusing than anything.
Again, it appears that you have a positioning, marketing, possibly pricing and maybe even management since all these relate to growth and sales.

Give me or anyone else here relevant to your issues a call :)
Claim your 10 minutes free with me using this link: www.clarity.fm/humbertovalle/Unthink

Humberto Valle