Unable to send a proposal.

[downniel]

Hi!
I have recently joined Upwork and created new profile. After searching for jobs through Find work > My feed or Recommended and trying to send quite a few proposale each and every one of them says: 
"Sorry, we were unable to save your application.

This job is private. Only freelancers invited by client can view this job."
I have already cleared my cache and cookies, still not working.
Kind regards,
Daniel

[JoanneP]

Hi Daniel,

Could you please send me a PM with the job post link so I can check this with the team? You can PM me by clicking on my name. Thank you!