Using a 10VAC @ 5VA Transformer

Last year I installed a Video Doorbell 3, wiring it to my existing 10VAC @ 5VA transformer. Although 5VA doesn't quite meet the 8VA minimum spec, everything worked fine, and has for the past two years.Today, I installed a Video Doorbell Wired, powered by the same transformer. I was much less confident that it would work properly, as this product requires a minimum 10VA and is entirely reliant on the transformer as its power source, but it, too, works perfectly!My question is this: Since everything is working fine, am I all set? Is there any concern or danger running these devices off a 10VAC @ 5VA transformer?Thanks!