Formula returning dash when I add a new cell

[FischerBuechele]

extremely frustrating I use this sheet to track my side job pay and it glitches everytime I try to edit it and returns 0. i am trying to add august to the gross pay total.

[#2]

Share a sample workbook so that we can check the issue.

[#3]

in this doc I think my problem is fixed but in the original its not

https://1drv.ms/x/c/7277ee0a8be44099/EevrJzRzlclAobMTAQsR_fMBG1MhaqfeS9PcXf6lrAg5WQ?e=Z6ihKU