Bad news is iCompta 4 code base is too old and can no longer be recompiled with current development tools so I won't be able to update it.
Possible solutions:
- Revert to macOS Ventura (hard to do)
- Have another Mac with an older system so you can use iCompta 4 on it
- Examine all transactions and modify their value dates (I doubt anyone will have the courage to do that…)
- Select all transactions and perform a batch modification of the value date field to September 1st, 2023 for example, then only correct the value dates of the transactions from September in order to have a meaningful preview from September onwards
- Purchase iCompta 6 then once in version 6 select all the transactions and perform a batch modification of the value date field by emptying the field in order to give each transaction its default value date (i.e. its date)