Tasks for Finish off a Drupal 6 Custom Module Website

This project is for an undisclosed website - will be revealed to the winner. The site has been under development for 18 months and is basically finished, although there are a few niggles and little things to finish off. The site is a comprehensive SMS website which allows people to make lists of subscribers and send them SMS messages. Each send costs credits depending on where in the world it goes. User can buy keywords for signups to thier lists and do other things like this. The site works but in a recent upgrade to the custom module a few things started playing up and need to be investigated. You need to do the following: 1. When a message is sent, it has stopped deducting credits from the users balance - this is done using the drupal userpoints api. Please find the place in the code where this is happening and make sure it works again by fixing that line of code. 2. When logged into the site you'll see a page to "add credit" - this allows a user to buy credits. It keeps a record of how many credits they have bought by watching their total orders in ubercart. It then automatically calculates a reduced price based on their passed buying history. Over time as they buy more and more the price should get cheaper. The pricing page on the website outlines these price reductions. However the features is working intermittently - investigate and make sure its working correctly. When I tested it seemed to work fine, but it may be that it is failing for users and not when logged in as admin which I was. 3. The function to send SMS messages is slow - please investigate how to speed this up and what can be done. 4. The function to send SMS messages fails when it is being send to more than a few people. It works for just a few, but I noticed when we tried to send to over 1000 people it failed. Please investigate. To test sending without actually spending money we have a dummy SMS gateway - if you are selected please talk to me about this. 5. When sending SMS the credits are not deducted - sorry this is the same point as 1. 6. We need to add some proper validation to the CSV numbers upload feature. Please rework the add numbers feature where people upload via csv to make sure all numbers and names are properly validated and secure. 7. Do a security check on the site looking for any obvious holes or bugs - please outline what you did and what you found if anything. Please check the validation of all forms. 8. We have a keyword feature where people can buy keywords and be billed monthly for them. This uses a drupal hook to automatically create a node. However to do this it requires allowing authenticated users to make their own nodes. They search for a keyword, then it automatically createds a recurring product with the name of that keyword. So what is happening is that anyone is signing up for an account and they are now making their own recursive product nodes in the ubercart store. To avoid this we must do the following. - We need to make having a confirmed mobile number required as part of the registration - and they must received a confirmation number from us before they can sign up. - Can you configure the necessary modules for SMS with the registration and make sure each user is required. - These modules may actually already be there but they are not configured to do this. I have built the majority of the site myself but have been to busy to complete these final tasks - but I'm happy to talk with you through doing this.