I paid for an Android app that was supposed to allow me to set the
rotation on my phablet. The free version works for 2 days then stops, the
paid for version is supposed to last for ever - so far it's 4 days max
before un-install/reinstall, and the developer ignores emails. I managed
to find a way to contact Google service and have received this:

"
This is Ely, your Google support. I hope this email finds you well. I
understand how important it is for you to resolve your concern about
reporting unresponsive app developers. I can definitely look into this for
you.

As our specialists reviewed your case, we expect our partners to provide a
great experience, and we're sorry for any inconvenience that this may have
caused you.

As much as I would love to assist you right away, I would definitely do it
to leave a smile on your face and lessen your worries.

Although you shouldn't expect a reply, a team at Google review these
reports, and will work directly with the developer if our team determines
that they have violated Google's content policies. In addition, if you
want to provide feedback about the app to other users, you can leave a
public review on the Google Play Store. See our Help Center article to
find out how to leave a review.
"

That looks like a flowery response followed by a suggestion I go forth and
multiply I think.

--
Jeff Gaines Dorset UK
I've been through the desert on a horse with no name.
It was a right bugger to get him back when he ran off.