Hello xkyaar,
Thank you so much for using our theme AcmeBlog.
1. You have to add the featured image on every posts, and the default image will replace. If post doesn’t have featured image default image will display. If you want to use your own default image, this feature is available on premium version of this theme AcmeBlogPro.

2. This two column options is available only on pro theme. Please check our pro theme.

3. To remove the lines in menu navigation, you have to edit some line of css code.

If you buy our premium product, we will provide you the child theme with some edited css, which helps to remove the line around menu. And we help to setup the theme too.
Check our premium product here. http://www.acmethemes.com/themes/acmeblogpro/
Difference on free and pro: http://www.acmethemes.com/themes/acmeblog/

Best Regards,
Acme Supports

Hello TheTravellingFreelancer,
You want to make the whole content clickable ? Already the image and Title is clickable and we are not focusing on the readmore button. If you are familiar with WordPress code, please edit the code with reference link. https://codex.wordpress.org/Function_Reference/the_permalink

If you need customization you need to hire for the customizer for the dedicated customization.
https://codex.wordpress.org/Function_Reference/the_permalink

Best Regards,
Acme Supports

Hello TheTravellingFreelancer,
Thank you so much for using our theme AcmeBlog. As your requirements, there is no any options to enable disable it.
You have to write a line of code on the file to enable it.
Please paste the below code on ‘template-parts/content.php’ below the line 43. i.e. below the code acmeblog_blog_content_layout();

This code help you to make it read more and gives the way to single page.

<p><a href="<?php the_permalink();?>">Read More</a></p>

Best Regards,
Acme Supports

Thank you so much ChicagoMusicGuide. 🙂
If you feel any confusion, please do ask us. We will surely support on your problems.

Best Regards,
Acme Supports

Hello,
May be there is something problem on server. No any such issue is noticed here. So please try to find the solution yourself. If the issue is still remaining, please do contact us.

Best Regards,
Acme Supports

Hello Jagurroy,
Thank you so much for using our theme Corporate Plus and thanks a lot for your interest on our premium product. There are lots of additional features available on our premium version. You can make your website as your need with premium theme. Please visit the theme details and demo to know details about the Corporate Plus Pro.
Comparison: http://www.acmethemes.com/themes/corporate-plus/
Details: http://www.acmethemes.com/themes/corporate-plus-pro/
Demo: https://demo.acmethemes.com/corporate-plus-pro/
WooCommerce Demo: https://demo.acmethemes.com/corporate-plus-pro/store-demo/shop/
Doc:https://doc.acmethemes.com/corporate-plus-pro/

If you feel any confusion, please feel free to ask. Our dedicated support team will provide you the best solutions.

Best Regards,
Amce Supports

Hello ChicagoMusicGuide,
If you need such type of link on footer, please create a new menu with such pages and add that menu items on the footer widget area with the help of Custom Menu widget. For example please follow this steps:
1. Create a page (Example: Terms and Condition)
2. Go to appearance > Menu and click on create a new menu.
3. Please give a new menu name and create it.
4. Add that pages on that menu and save it.
5. Go to Appearance > Widget and add Custom Menu widget on (Footer Widget Area) and select the newly created menu from the dropdown on that custom menu widget.
Now, your page will appear on the footer section. Please try once and if not worked, let us know.

With Best Regards,
Acme Supports

Hello Kellie K,
While uploading the images, is there any error message or something noticed? If you find any message or notice please let us know. If you are able to add the images on media library and set the featured image and then the images is not previewed ? There are various reason for this type of issues, so we can’t tell you what the exact reason is. It would better if you provide the exact error message(if appeared).

Thanks