#1: Apostrophes aren't allowed in URLs because it can lead to issues. Take a look at this:
#2: You'll have to fix this with custom CSS
#3: Not sure about this one, probably also with custom CSS.
#4: I only have experience with the pro theme, so I'm not sure as to what extend you can edit your footer in the free version - I'm assuming it's limited.
#5: You can easily solve this by cropping your images to the desired dimensions/aspect ratio beforehand. That way you're in charge of how your images will be scaled.
#6: Try the BS3 grid builder plugin, it's by the same developer as Hypermarket and offers a lot of additional flexibility for your content. Be sure to also install the Classic Editor (by Wordpress) to use this.
To answer your first question ("would I get extra support if I buy the pro theme?"): No. Support for Hypermarket is dead, whether you have the free or paid version. I've never had any of my questions answered, either on the forum or through e-mail. You're paying purely for the theme itself, once you've done that you're on your own.
Best of luck! Hope I could help a little bit.