The fiscal sponsor must be a 501(c)(3) organization as recognized by the IRS. The fiscal sponsor cannot be an organization whose tax-exempt status is pending. The sponsored project must be able to qualify for exemption under section 501(c)(3), even if the project has no intention of ever applying for it.
Pressing the Ignore button on the listed invitation on the LinkedIn site is effectively a soft rejection. The message then moves to your Archived folder. You can later choose to open the message again and accept the request.
If you get a message failed would you like to try again if you hit yes and it does the same thing hit no after hitting no it will say invalid destination that means that whomever you are contacting has blocked your number. thats what happened to me and after researching it thats what happens when you are blocked.