Crazy data usage

[Frank McCraw]

Hi - I played pickleball for about 2 hours this morning and I came back and was told my 5GB data plan was all used up.  I looked at the apps data usage and it said that BLB had used 4.83 GB.  I received an 80% warning message at 8:17AM and a 100% data used up message at 8.25.  I haven't even used BLB intentionally recently.  The data usage chart shows a huge spike within the last 24 hours, but I can't drill down to more detail.  Is there any reason BLB would use up almost 5 GB of data in a short period like an hour of unattended use???  Thanks!