Dear Sir,
Looks doable, but as you know, it is a bug fixing work, so can not predict.
Ideally, we work at EUR10/hour - You can provide us all the access and we will review this further. Whatever hours it will take, will be your payable at given rate.
You will need to purchase 3 hours (i.e. EUR30) and we will start checking. If we over the 3 hours, you need to purchase next 3 hours and so on, until we will conclude this.
And yes, if we will NOT able to do this in 6 hours, we will let you know our conclusion.
This looks certainly doable but we need to try and error and check, whether it is really technically doable as you have club TWO separate things together.
Hope you getting me.
Let us know.
- Prakash
WeTheDevelopers