Android Question B4A-bridge not on Play Store?!?

I have 15 Android tablets running a custom app back in California. The tablet I use to test things with crapped out on me so I picked up another one of the same kind. They are Asus K013 7" memo pads. I went to the play store to load up B4a Bridge and it says "not available". Googling it, I can see that it says the target SDK is now at 33. These tablets are running Android 5, no idea what version of the SDK they have. Is that the problem though? Is there any way to get a copy of Bridge that will still work? I can't just upgrade all the tablets, it's a non-profit, they can't afford that.

***************** CANCEL THAT ********************

Should have searched for B4A-Bridge. Sheesh! Needed the hyphen. B4A didn't bring it up either..

Thanks!
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Thanks,
Jim