certificate ND215.QuickCloud365.com and cloud lag

Back in 2019 we moved to a "stand alone" format as we do not process payrolls through Sage. Than moved to the cloud based format on 3-2-21. Since we have had a lag in key stokes (delay) and this morning my computer pop up indicates that our identity of the remote could not be authenticated due to certificate ND215.QuickCloud365.com. I have concerns about our Sage Support (ATS, LLC) may be an issue? Please advise.