Something went sideways with the ability for many Android players to login to HS, causing a never-ending loop of getting sent to the Play store (for no actual download) then back to the client, but back to the store again.
I can confirm that reinstalling fixed this on both my phone and tablet. Before you wig out, just reinstall and you should be able to log in just fine.
I came here looking for this.
I hate how you rationalize it. I’d rather throw the tantrum of not being able to play.
Hope some fix would be released soon. I was forced to reinstall HS so many times after they messed up something I’m not going to repeat that instead of waiting for them to fix their mess.
I guess it depends on how big of a deal a reinstall is for you.
Took my 5 minutes tops on my tablet and it was going great.
Well it’s more like “do l need to play HS right now so badly to once again doing a reinstall because some incompetent lad has managed to screw something again?” 
And because I haven’t played HS for 4 months the answer is “nope” 
EDIT: Aaaand…it’s fixed.
Should change title to I finally uninstall HS or like… 
Reinstalling does boot the game but also the “endlessly searching opponent” while on playing on data bug returned…
I’m so tired of these constant issues
Devs were busy coding new bundles in a shop. They are normal people with their limits, just like us, so they cannot work on everything at same time - like updates, stability of the game, working client and new bundles at same time.
There is a priority list like in everything else in a life.
Can confirm.
It’s an easy fix. When they send you “to the store”, just click uninstall.
Well, easy for me to say who has a great and free connection here at work. Sucks for metered people who have to watch their gigs (me, at home)
GL
Wow, thanks for letting us know about life.
Next time I need an excuse for me doing my job poorly, I’ll be sure to have my boss call you!
I’ll just tell him “hey, Im just a person, I cant be expected to perform the duties I get a paycheck for!”
Also “The report isnt ready yet because this cup of coffee isnt going to drink itself, for gods sake!”
As I have said - priority list 
Coffee doesn’t work on me anymore.
I’m like Blade with sunlight.
You have to increase the dose. The body get used to caffeine after some time.
I was using tea spoons for coffee, not I am using table spoons.
Though you have to be careful - few days ago I was on the phone and by mistake made kinda strong coffee (3 table spoons instaed of 2) and my heart almost broke my ribs 
My Facebook account was connected to my Battle.net account and so when the mobile game asks me to log in, it opens the login screen, and so instead of using my Battle.net email and password, I used the option to log in via Facebook, and it actually worked. I hope that will do it for you as well.