Earlier this week I logged into Citi's website and noticed two statement credits for 03/01/25 - 03/31/25.
One statement credit was $3.20 and one was $11.07.
I thought that was odd since my two HomeDepot.com purchases were $20 and $125.
The only purchase that would give me $3.20 at 10% is my $31.98 purchase at BestBuy.com for H&R Block tax software.

The progress email from Citi stated that I had spent $1034.32 on eligible home improvement purchases.
The only way that total is possible is if the $31.98 BestBuy.com purchase counted as "Home Improvement".

This is really bizarre.
The merchant category for Best Buy is Merchandise-ELECTRONIC STORES.

Anyway, just another datapoint.