It is not to late to comment on the planning application. Although the deadline was 17th January Dorset Council have promised to consider all responses received.
Please find below the link to the planning application. Click on this link or cut and paste onto your browser. This will take you to the DC planning portal. You just need to click accept on their terms and conditions (bottom of page).
This will take you to the application. You will then be able to click on the box “make comments” at the bottom righ hand side of the page and then submit any comments you want to make.
On the first page of the application you can click on documents tab at top of page to see all the various documents associated with the application and also see all the public comments.