Install and configure an Open Cart web portal -- 2

We will purchase a readymade template in Open Cart. Template URL: [login to view URL] In addition to installation & setup, there will be following tasks: 1. Integrate Shiprocket ([login to view URL]) for shipping purpose [Free OC extension is available, you need to integrate that. [login to view URL]] 2. Integrate [login to view URL] payment gateway [You can use [login to view URL] for integration OR you can look at it also [login to view URL]] 3. Integrate Razorpay payment gateway [You can use [login to view URL] for integration OR you can look at it also [login to view URL]] 4. Login via Mobile No.: 4.1 On the registration page, "Telephone" is need to be renamed by "Mobile No." & an additional static dropdown of Country Code will need to be placed just before Mobile No. on the same line with a single option of "+91 (India)", so it will be shown as selected also. For Mobile No., a Java Script validation will be there to check 10 character length & number. 4.2 Once it will be submitted for registration & the Telephone No. will be saved in a new DB Column called "MobileNo_Temp", then an SMS with an OTP will be sent to the customer from the backend & the user will be redirected to a new page called "[login to view URL]", where a Mobile No. text box (auto filled & disabled) & blank text box for OTP will be there. Next to Mobile No. there will be a button/option to change the Mobile No., if clicked then only the Mobile No. text box will be enabled for editing. If the user will change the mobile number then this new number will be saved in that new column called "MobileNo_Temp" & will send another OTP to this new number. The same process will be followed. Once the mobile no. will be verified then it will be moved from "MobileNo_Temp" to "Telephone". And the user will be activated. There will be another DB Column will need to be added "NoOfChangeOfMobile", where by default 1 will be set but if the mobile number will be changed then this counter will be increased by one everytime, this is for future purpose. 4.4 On the user's profile page also the same static Country Code dropdown will need to be placed, and next to Mobile No. text box one change Mobile No. link should be there, which will redirect the user to same "[login to view URL]" page, where the user should be able to change their mobile number in the same way as explained above. 4.5 In case of Forgot Password, next to Email text box add another Text Box for Mobile No. along with static Country Code Dropdown with "OR" option, user can enter either Email or Mobile No., JS validation must be there to enter either one. If Mobile No. entered then an SMS with their current password will be sent. The SMS text will be provided later. If Email ID will be entered then the existing functionality will be working. Good quality code must be there & global coding standard should be followed. It's a very simple straight forward job, kindly do your best possible quote. Once these tasks will be done, then our MVP will be ready to launch then would like to do Maintenance Contract with the same developer for future upgrades at additional cost. We are looking for a long term association, our client is a startup & already having a long term association with our company. P.S.: I have added one PDF file for all the minor customization, please have a look before placing any bid. But still during the development & go live, we may face some difficulties where your help will be must, hope you understand that. Obviously if much of your efforts will be needed then we will give you additional genuine charges. Thanks