download filings using ADVFIL on workspace

I am trying to download filings using ADVFIL on workspace. I am searching all annual filings that contain a specific phrase (f.ex. "circular economy") during a given period (f.ex. "1 MArch to 31 MArch 2020"). The problem is that when I try to download all filings the download crashes after a while. 

I tried to download documents by batches of 200 but the download crashes at random points and there is no way of knowing where it has crashed.Here is what I need to do: I need to download all documents from the category "annual" that contain a given search term ("circular economy"). Are there alternative ways of doing that. I think a simple Python script could solve the problem. I have tried to do that but haven't been successful so far.