Completely sure Eric, since my router day 1, My ECC cert was working perfectly, using prime256v1 curve. In fact, when I updated and I have been looking at the possible problem, by SFTP I verified that they were correctly in /jffs/.cert, and they were my usual certificates, but instead of them the Router was using its own self-signed, which I gave counts at the moment by the warning of the browser itself. That as I said, I have solved it by generating a new one using the ECC cert as a template and an RSA key.
Regarding QoS, I have uninstalled FlexQoS and made sure there was nothing left. I have upgraded to the new build that you released a while ago for the AX58U and the problem persists. The Router correctly identifies the connections, but for practical purposes QoS does not seem to be working, at least in adaptive. The log does not return anything, the configuration file /tmp/bwdpi/qosd.conf is not generated. I have seen in another thread another user who had the exact same problem with an AX58U also, but with Alpha3, in his case he reformatted the JFFS without success. Any ideas before fully reset the Router?
I'm having (and had on a previous Beta code the same exact issue - FlexQoS. Never got it to work at all. Reverted to mainline Merlin code and it was fine.