I think I found out what the issue was. I feel part of it was my fault for not updating my credentials about 4 months ago. I was not actively using Tiller for about 6 months now but it was about 4 months ago that Tiller did not update because of the credentials.
I decided to actually create a new Tiller template, but I first updated my credentials. Once I had all my information imported, I noticed that there is no balance history between mid-August to the beginning of December on all of my accounts.
I tried adding it manually and I would just copy and paste the Account ID but I left the Balance ID empty. It was the first since I came back to Tiller that I saw this Balance ID column.
When I checked the Net worth tab, it created separate accounts for each entry I created and had 15 rows of the same account with a balance 10x more than what I have.
| PERSONAL | $7,863 | $7,863 |
| Online Savings Account (xxxxxx10) | $4,819 | $4,819 |
| UNGROUPED ASSET | $35,311 | $41,906 |
| Online Savings Account (xxxxxx10) | $4,819 | $4,819 |
| Online Savings Account (xxxxxx10) | $4,819 | $4,819 |
| Online Savings Account (xxxxxx10) | $4,819 | $4,819 |
...
Is there a way to actually fix this?