Login to android store doesn't work

REPRODUCIBILITY (% or how often): 100%
BUILD ID = OS VERSION (Settings > About product): 3.4.0.24
HARDWARE (Jolla1, Tablet, XA2,…): Sony Xperia XA2 (H3113)
UI LANGUAGE: EN
REGRESSION: (compared to previous public release: Yes, No, ?): No

DESCRIPTION:

Login to Android Store still shows message “System is now in maintenance, please try again later.”.
I’m trying it whole day, but it’s not possible to login to it.

PRECONDITIONS:

Sailfish X owner.

STEPS TO REPRODUCE:

  1. Click on Android “Store” and run app.
  2. Tap to upper left corner to “hamburger” menu.
  3. Click on “My account.”
  4. Fill email and password then click on Login button.

EXPECTED RESULT:

Proper login to store.

ACTUAL RESULT:

No login and “System is now in maintenance, please try again later.” message appears.

ADDITIONAL INFORMATION:

Main purpose of this, was to get backup from my WhatsApp, which I’ve made on my older Intex Aqua Fish phone from Google drive.
So after buying XA2 I wanted to restore backup data from Google drive, but I have no options to restore it from GD in WhatsApp. WhatsApp tells me, that there is no Google Play installed.