Tides app on Quatix 7pro

Hi.  The built in Tides app on my Quatix 7 pro shows incorrect times by a much as 90 minutes.  I uninstalled and reinstalled the app. I set my phone(Samsung s22) to automatic time updates. No improvement.  Could it be that the app has not been set for BST by the App engineers? I've pivot noticed the issue for a few weeks.  Also the app will not permit me to set it for my local harbour which is Howth, Ireland but instead just sets it to 'County Dublin' . It's not accurate enough to use; and the main reason I bought it was for sailing. 

Hope you can solve the issues. 

Thanks 

Guy Molyneux