So probably a coincidence with a bug. And the reloading or relogging sort of activated the bug.
Logging someone out that has "Suspicious Activity" very well defeats a lot of bots.
I did not get booted so far out of my dl version. My cps usually is below 15. The click frequency I could achieve with the keyboard mouse is higher. At least I know I can press a button more than five times a second and that would be one button for left click and another button for double click.
Sadly, the stock trade on tier 2 is not as profitable as I previously thought. Still faster than farming though, due to compound interest. It is more like 15% each trade.