You're being
Pool-stored.
You add Alkalinity up one day and then something else to reduce it later? You don't see a problem? You don' need hardness plus ever because you have a vinyl pool and there is no plaster to damage. That is just plain theft to try and sell that.
The money they've already bilked you out of could have bought a proper test kit.
No matter what is in those HTH shock pods, two is not enough to drive the CYA too high.
Step one: order a proper test kit. You won't find one in a store anywhere. And you're better off staying out of pool stores anyway, lest they max out your credit cards. You can hunt for a Taylor K2006C or just go to
TFTestkits.net and order a TF100.
Step two: read the label on those pods so we know what is in them. Or give us the UPC code. Some way to guesstimate what you've added without having test results.
Step three: go find some liquid pool chlorine or bleach. Start hunting in the pool ssection of a big box store like walmart or lowes. Get a couple gallons. Add 3 cups of 10% every day until you get your test kit and can fix things right. If you can;t find 10%, tell us what you did find. Steer away from anything that says scented or antisplash or colorgard.
Step four: Pool School. Start with
ABCs of Pool Water Chemistry Then
PoolMath Recommended Pool Chemicals - Trouble Free Pool is also a good read. Tells you what adds what and how to add it
Step five, report back with what you found and be ready to hunt some other stuff.
I wouldn't trust it completely, but the pH test on those test strips is usually close. The rest of the tests are useless. You'll have to trust the pH test results on that until your test kit arrives. And I'm not kidding about test kit as step one. Order now so maybe it makes it out the door today.