You will find they have a 800 number with a help line. Have the info. on the door with the specs-.
Product help line is where you want to be in contact with ,in particular a tech. rep. that knows all about installation and adjustments
on those closers.
It seems to me the installers the store sent over bowed out on ya using lame excuses and ill formed advice.
They no doubt took a five minute crash course on installation given by one of the store shift managers to the tune of
get in and get out quick !
Whatever,- the manufacturer help line rep. will tell you in fact what that door can do ,should do and how to see to it that it does what is expected of it. And if those closers are defect,they will send you replacements free of charge. And if thats the case call the store and have those lame installers called out on the carpet, for whatever good that will do.
At least the manufacturer tech. advisor's will give you enough information so that you can call that store armed with the info. you need to give them the hell they deserve which will in turn get them to resolve the issues.
If you do nothing and say nothing -the store wins. If you go at them with facts given to you by the manufacturer, they will be forced to make that door work as it should and as is acceptable.
As far a adjustments go, I won't go into that, been stuck there many times with different name brands on those storm doors ,screen doors what have you. Yours is a bit of a specialty door and may require a bit of off setting on the installation because nothing is perfectly square in your rental house- if that tells you anything.
!