at one point, i had over 500K credits. would sit at home working and just click through videos on my phone while on calls. Then I'd do it while watching TV. Would earn 10-12K in credits each day. Wasn't running multiple devices or using a "bot" to click. Just a guy and his phone.
bought a golden putter (not really worth it but I digress). About 2 weeks later, the 150 credit limit went into effect.
When I reached out, I got told that people were running 6-8 devices and using auto-clickers. Interestingly enough, I played TapSports Baseball, and they too had a credit limit of 500 per day (in 5 credit increments, with random videos being 10 credits). They had it coded that you couldn't be logged into 2 devices and you couldn't use an emulator. Brought that up to WGT, to increase the credit limit to 300 or 500 per day, got the standard thanks email and here we are. still can run emulators or multiple devices (currently doing it now on phone and ipad to get my 150 credits before I head to the ball field for a tournament).