How do I download a data-file from a link which has a data-confirm-modal?

Hi

I'm having trouble downloading a csv file from a webpage using the webread function. To manually download the data-file from the webpage, the user needs to click thru a confirmation pop-up box and I suspect this causing me problems. The data confirmation pop-up box shown below. The webpage coding is also shown.

My Matlab code attempt is below along with the resultant error:

options=weboptions('Username','redacted','Password','redacted','Timeout',Inf,'ContentType','text');
test2 = webread('https://midnorthmesonet-api.taindata.com/admin/sites/29/download_csv_data',options);

I've trialled the webread function on a data-file from the Bureau of Meteorology and it works fine (code below). And I can also successfully use webread to read the 'https://midnorthmesonet-api.taindata.com/admin/sites' webpage so I think the username and password is fine. I'm assuming I need another QueryName and QueryValue pair to deal with the pop-up, but I can't find any info about this. Any tips would be much appreciated!

options = weboptions('ContentType','text');
test1 = webread('http://www.bom.gov.au/fwo/IDS60801/IDS60801.94681.axf',options);