Before responding, look beyond the title. Check:
who published it;
what kind of Invite it is;
whether access is Public, Closed or Direct;
the role, creative challenge or deliverable;
the compensation and number of people being selected;
dates, deadline, location and travel;
application or submission requirements;
usage rights, licensing and exclusivity;
any age, availability, licence or right-to-work requirement;
how and when the client plans to decide.
A recommendation is not the same as eligibility. An Invite can appear because it is relevant to your preferences, while still having a hard requirement you need to check yourself.
If something important is unclear, use the available question or Message route before committing unpaid time or accepting the work.