Thanks for joining the Community, @bruce13. I'm here to help with accessing the Check and Bank Deposit icons.
Just to clarify, do you have an option of + New at the top of the navigation panel? If so, there has been a change to the workflow in QuickBooks Online (QBO). This button can be used to access the functions you mentioned.

For additional information about this new workflow, please see the following article: What's new in QuickBooks Online: October 2019.
Should you be unable to access these options, or an icon is being unresponsive, I recommend the steps in the following resource: Troubleshooting browser problems.
Please feel free to let me know how it goes, as it's my priority that you can create checks and deposits. I hope you have a wonderful day.