Palo Alto Ntworks App support on 7.3

Hi, I am currently trying to install the Splunk for Palo Alto Networks app on a Splunk 7.3.1 SH cluster, and when I try to find this app on Splunk Base from one of the Search Heads, I am not able to actually find it. If I search for it on a 7.2 SH, I do find it (available for install). Is this because the app is not yet currently supported on Splunk 7.3 ? I do understand that the recomendation is to use a deployer on SH clusters, but I was just trying to see if I can find it using the regular Splunk browser using "Find More Apps" on one of the search heads. Thanks so much for you answers :-)