Hey @Rob and @vlad,
I've been testing the latest corona build (i.e. 2019.3498) for a couple of days now. I am now able to build 64-bit apps with most of the plugins working.
Previously, when I tried building, I was getting some lengthy errors along with a "BUILD FAILURE" message. I kept trying while removing the plugins from build.settings one by one hoping to pinpoint the ones that are causing the build to fail. It turns out that the ad plugins were the ones responsible. I was able to successfully build apks and run them on devices.
Surprisingly, when I was building on WINDOWS, I was able to build apks even after including certain plugins like applovin, supersonic and inmobi . But what happens as a result is when I install the app on a device and then try running it, it crashes and I can't even see the splash screen. On Mac though, I can't build apks unless I remove all ad related plugins from build.settings.
I am including the logs from my Mac which should provide you with all the details with regards to the build error. As said, I was able to build apks on Windows while including some of these plugins, but the app crashes everytime I run it. In case you need the logs for crash related error let me know and I can post that as well.