As noted by others if you are usinga free service that rating may have little accuracy.
I think that you have now been knocked back twice in short succession?
From memory your income is lowish and as you have rental properties you may have loans on these?
Banks do not just consider credit scores and some organisations would factor it low. However just I caution everyone taking out credit cards is more than just chasing points and you, and everyone else, need to consider all the implications and risks for all aspects of your financial life in making numerous credit card applications.
From what you have posted in various threads you may well be set yourself up with some serious financial black marks with your current activity.
Yes some people including myself make numerous credit card applications. But you need to consider what the implications may be for your own circumstances and remember that credit card applications are not separate from other aspects of your financial life. If you have property loans for example you may wish to renegotiate the interest rate from time to time. Repeated credit card declinations may well affect that for example.