Your account only shows the features included in your plan. If an option has disappeared, here is what to check.
You changed plans recently
Each plan includes its own features. If you moved from an older plan to a current plan, some features of the older plan may not be included in the new one. It is not possible to go back to the older plan.
See your plan
Go to your account's billing page.
Your plan is shown as "Active plan" at the top of the page.
Compare it with what each plan includes in Hexfit plans and pricing.
Other things to check
A software update may have moved some tabs.
If you are an employee, check with your administrator if they changed your access profile or the company's plan.
If a payment is late, your subscription may be temporarily suspended. In this case, you are notified in advance.