A site that is long-established, operating since 2005, is now seeking to bring in new clients.
It has a Facebook (FB) account with a serious APP that permits it to capture interested customers names, email, etc. all on Facebook.
Needed is an analysis of what is necessary to make this campaign effort perform;
A budget to keep the campaigning productive.
An NDA will be required.
Questions will be asked of you to qualify you.
Please provide a complete Upwork page or a complete resume, or both.
Probably the "to be decided" bids will be ignored. Do your best, then, to come up with a reasonable bid.