Hi @tx_haggis
Briefly reopenning this thread.
You have been using the Automatic Analysis for C and C++ on SonarQube Cloud and indeed, we have this limitation about the automatic analysis in general : you cannot upload your coverage.
Now, we just released Autoconfig for C and C++ for SonarQube Cloud. With it, you can scan the code from your CI with a much simplified configuration and from there, you can upload your coverage.