@dprent I have the same issue and it started in March too. Were you able to resolve the issue?
Are you saying the web site doesn't show your usage?
@wsone7 wrote: ... I have the same issue ...
Please see the "I don't see my usage meter in My Account, what should I do?" link on https://www.xfinity.com/support/articles/data-usage-plan:
If you have questions related to the Data Usage Meter, please call us at 1-877-807-6581 ...
Hmm. Sounds like you might have more than one userid/password, which is possible with Comcast.
@wsone7 wrote: ... It doesn't show when I log in on the website or the mobile app.
Are you logging in with your Primary User ID (check with the Lookup tool at https://idm.xfinity.com/myaccount/lookup)? To view the meter your ID needs to have both Basic and Billing access permissions. Primary users have these automatically, Secondary IDs would need to have them granted in My Account.