An interesting question ! Why does it not work for some ? Is there a common factor for those who fail ?
I just tested and installed the transportr and warpinator both installed fine, 7:30 am in UK.
My experience of App Lounge fails would fit with needing a clear line to the remote server, if App Lounge takes more than a few moments to start (that is to say, there is an extended “animated empty” screen before the screen stabilizes to Search or Update) it is likely busy, so I try to guess a less busy time of day.
If I have even 1 fail, I go through the whole performance of clear App Lounge Cache & Storage and logout / Anonymous login and resign Terms of Service.
More clearly https://doc.e.foundation/support-topics/app_lounge_troubleshooting
I believe there were one or two posts blaming the SIM card / carrier.
I wrote a checklist here. Anyone can edit it with further suggestions.