Joomla custom component development changes

We have a Joomla website Taransay Print ([login to view URL]) which has a custom built component for managing online entries for dog shows. The Website purpose is to allow for online entry into Dog Shows. Users can create an account and add the dogs that they own to their account. They can then select dog shows to enter and enter their various dogs in the available classes. The website automatically filters the class selections by breed, age, sex, class type, etc. There is separate pricing for each class type as well as first entry, second entry and member / non-member status. This is all automatically calculated by the class selections. There are further options for entry later through the show entry for additional extras, handler classes, etc. but these are fairly straight forward. The final dog show entry is confirmed by the end user and they are then redirected to Paypal for payment. Once complete they are redirected back to Taransay. The administrator of the website creates and publishes each dog shows specifying the classes, pricing and extras for each show. They can see the entries and the unique payment ID ffrom Paypal. There are a number of reports that can be generated and downloaded as a PDF, for example the entries for the show, owner details, etc. We need a developer who can troubleshoot and fix a few issues we have such as: 1) The pricing matrix is not quite right for the Variety classes 2) There is an issue with some information not being shown on the email that comes through to the person who entered. 3) There is a small problem with the age filter for one group 12 months to 24 months. There will be ongoing bug fixes and changes required, so we're looking for a developer who has the ability to take this project on and can help us develop it further. Please provide some relevant information in your bid or it will be ignored. I will message freelancers I like the sound of from their bid and provide admin access for a more comprehensive look into requirements. Thanks.