It's clearly stated where the shares went. Some so quickly forget that last year many were talking about how the outstanding shares would be going over 1B soon due to debt. Not looking like that is going to happen anymore as PCTL has worked to clean things up in a better than expected fashion.
Here is half of the increase -
On January 4, 2021, the Company issued 25,000,000 common shares to settle a convertible note
And there's several other similar notes in the filing. Most of the increase has been to settle debt. Cleaning up the balance sheet. No more concern of massive increase. Sounds good to me.