Some CSS Issues after WPLMS Setup 2

Hello Customer Support: I found many issues on my website so I recorded a video for you to take a look at here https://youtu.be/76LqlkeqLnU The summary of all the issues is listed below. Please let me know how to solve them one by one or just help me fix them. Thank you for your help. 5. The claim button does not have a good format when it first appears on the Profile -> Parent page 6. On the app page, all the drop-down menus are too narrow to contain the text, and the text in the menu should be moved up a little. 7. On the app page, on the Activity -> Commission, the month selection of the Calendar has no colour contrast so the texts are hard to be distinguished. 8. On the app page, in all tabs in Activity, the Default text “Whats new” should be “What’s new”. The “Upload File” text after clicking on the icons should be aligned in the middle instead of the top. 9. On the app page, on the profile -> Settings -> Wall Settings, the drop-down menu is too close to the “Wall Settings” text. 10. On the app page, on the Courses ->My Assignment, the numbers are shown on the Assigned tab cannot be seen in the white circle. The gap between the two buttons is too close. 11. On the app page, on the Profile -> Followers -> Following, the text is too close to the search bar. The “Follow more members” button does nothing except show a redundant Search Member field. 12. On the app page, on the Courses -> Gift Course, The Gifts Sent and Gift Accepted tabs do not go bold when selected. I will share my website credential with you in the following private reply so that you can go to the backend of my site and fix these issues. Thank you and have a great day.