In OB2 you cannot use the chromedriver since puppeteer comes with its own driver, and I already added the stealth plugin (maybe it just needs some configuration). For OB1 just replace the chromedriver.exe file inside the bin folder.
The stealth plugin for puppeteer should already be activated but maybe some configuration is needed code-wise inside the OB2 code itself since I didn’t have time to experiment with it. If you don’t know how to code I’m afraid there’s not much you can do.