Wordpress plugin amended

General information for the website: Plugin Fix
Description of requirements/features: I had a plugin built 4 years ago which is a suite of finance tools. I need to have it updated to make sure it is still wordpress compliant and also now have the tools responsive. I also want to make sure the results of the tools are displayed on page and not as some are in javascript alert boxes - it looks messy. Two of the tools pop javascript windows with results

the tools are build in php pages with a plugin page that allow uses to add via widgets or shortcode. This needs to stay but I would also like to add a link in the plugin description so people can download or view the documentation.

Should take long for someone who knows what they are doing. I am not looking for a full rebuild just some amends.
Specific technologies required: wordpress plugin design
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