Fix a strategy trading bot

Hello I have a strategy trading bot developed last year and earned well, but it does not work as well as expected recently. Some data providers seem like changed their feature or limitation. So I stopped its running on server. But I can not get help from the previous developer because he got a new job. He is available in 4 months. So I am seeking a senior blockchain developer to update/fix my bot. The previous developer can give you some advices. The budget is $30 - 60 and 3 - 6 months. If you are interesting in this project, please contact me with your experiences. Best regards