Please submit a request to support they will be able to look into this for you here is a Link https://social-support.plarium.com/hc/en-us/requests/new?ticket_form_id=168205&fbclid=IwAR0rWnxKHZXxrhNSqGsDh5tWogavQUynr71DjYNrXsDMhOFcMi43vv6tGvc
It is not possible to login and fail to be given a reward. They are paid automatically.
Your Day 90 Paragon Reward is paid as soon as you login. To test this you need to make a note of how many Dragons and Sapphires you have on Day 89.
Your 50 Dragons are added when you login, not when you click the reward.
I send messages to level 2 abandoned hero castles as a convenient memo-pad - These messages can never be read by anyone else.