Youtube comment software update existing source code .NET

I have an existing software written in .NET by another freelancer, but now after 1 year it doesn't work anymore. What the software does: This software is able to make Youtube comments based on different email addresses and the comments are chosen random from text files. What is used to make this software? - Visual Stduio .NET - Geckodriver - NuGet packages NuGet Packages: Google.Apis.1.40.0 Google.Apis.Auth.1.40.0 Google.Apis.Core.1.40.0 Google.Apis.YouTube.v3.1.40.0.1593 Newtonsoft.Json.12.0.2 Selenium.WebDriver.3.141.0 System.Net.Http.4.3.4 System.Security.Cryptography.Algorithms.4.3.1 System.Security.Cryptography.Encoding.4.3.0 System.Security.Cryptography.Primitives.4.3.0 System.Security.Cryptography.X509Certificates.4.3.2 What is the currenct error: Software is working fine like loading, looking for youtube video's, logging etc, but when i check my email accounts on youtube history there is no comment left on the video's so for some reasing it doesn't make the commens on youtube videos. If you think the software is written poorly and you have a better idea to fix this software in easier way than no problem you can use your own way to let it work in .NET (Visual Bsic).