Why does upgrade take so long after paying?

This is my second attempt to upgrade to Yearly Platinum Membership. I paid the subscription via Google Play on 5th February and two days later still am not registered as platinum member and cannot use more than 5 tactics games.

I tried a month ago to upgrade and eventually after five days I still hadn't been upgraded and so cancelled my subscription. A few hours after cancelling my subscription was upgraded for a trial period and then cancelled.

I will wait a few days to see if my upgrade is eventually implemented but I must say this delay of days is unacceptable. 

Why does it take Chess.com so long to act on an upgrade request after payment?

I guess it is instantly upgraded. There might be a problem in the subscription. I'll wait for others to improve upon this.

These type of threads are emerging a lot in the past few days. C.c needs to do something hurrily or they'll lose revenue.