Submisions are not going

My respondents after concluding their field work, and filed and submitted their kobo form, the submission failed to upload to the server.
It says:
:The data server for your form or the Enketo server is down. Please try again later or contact (500)". How do I solve this problem?

Welcome back to the community, @governalert! Could you kindly recheck to see if the issues are still on? It should be resolved by now.

Yes, it has been resolved.
Thank you