How I say and in previous post of mine is nothing wrong with the alidropship plugin... If you like to delete attribute is a way to do it in back end of you site, I don't suggests it because most people the don't know what that are doing and broke the connection from aliexpress.
If you have experience with wordpress and woocomerce go for the woo version ,is most customizable and flexible to use.
If you don't know much about wordpress go for the original plugin ,is more easy to use and beginner friendly.
I use the same aelia currency switcher. So Is your cache plugin issue, I use wp faster cache and I exlude the currency cookies for all of my currency I have set up in my site.(this is the only way the wp faster cache is be able to working correctly)
I also use the woocommerce cache handler...
If you use the inbuild currency switcher and options and cache plugin us well are not compatible very well.
If this is the case you are one of many of us which have move from the alidropship currency switcher and use third party for this case.
Not sure about plugin..
but even if is someone see your licence key in your website it's mean is allready use ... nobody can use the same one because alidropship team must reset it for is working with different domain.
I was always curious how much money are spent per month for it's have this unreal estimations profit.
For is be fair ,They must make it clear it an estimation of profit if you spent this amount of money for those target audience.