HBO max should depend upon inputstream.adaptive which should depend upon widevine.helper .. which should download and extract the widevine CDM lib file from a ChromeOS file (how these things are obtained) and install it to the required place. The Kodi log shows that you have inputstream.adaptive installed, and the pic shows that the CDM lib is installed. However it gets a 400 error when requesting a license from the HBO servers .. so the process fails.
I'd probably start with reading the Kodi forum thread for HBO max add-on to see if there are transient issues (it happens) or if there's an issue with specific versions of the widevine lib (it also happens from time to time).