Checkpoint ?

We've tried posting on instagram but we fail. We solved the checkpoints twice and in the third attempt, no checkpoint errorlog entry was added, but still an error and no post occured. Please advise: http://prntscr.com/rj2k1d As per older posts, It seems that other buyers suffered from the same. We are on a dedicated server and we cannot change the IP. Even if we would do it - it would be a similar IP. Are there any workarounds available please?