Did I misunderstand before buying about getting 20 xp multipliers after purchasing Battlepass?
You get five a day, with a maximum of 20 in reserve if you don’t use them up.
Yeah if you wait a day without completing any you should get 5. It maxes at 20 in reserve. Shows in upper right corner of challenge screen.
Found this in the Battlepass faq:
Please keep in mind that, upon purchasing the Battle Pass, you will start with 20 XP multipliers and you can use these daily.
Each time you do not have 20 XP multipliers, you will receive up to 5 additional multipliers until you are filled back up to the maximum amount of 20.
Nope, you need to wait to collect 20, then, do only 700\1200 tasks, wait another 4 days, repeat = profit
And you are absolutely right, it actually says that you are granted 20 xp multipliers upon purchase, so either they need to update their battlepass faq or fix the initial amount of xp multipliers 
@Community Can you shed some lights on this?
For those that don’t believe it, you can read the battlepass faq here:
Nice finding the fine print!
I don’t know what next steps are. I don’t know if they can even give multiplayers out individually.
Good luck!