I have the right seed phrase but YWallet does not show the right balance. Where are the rest of my funds?
Funds are located at addresses that derived from the seed phrase, but it is not a one to one mapping. In fact, from a given seed phrase, you have as many addresses as you want. You need to also know the derivation path.
seed phrase + derivation path gives you a secret key and therefore an address.
There is a “standard” derivation that all shielded wallets use. But then some wallets decided to use additional derivation paths!
In this case, only the original wallet knows what derivation paths they used and therefore only it knows where to look for the funds.
Every derivation path impacts the synchronization time.
First of all, scanning an address is costly. Public blockchains do not have this problem because the scan is made once and for all by the remote server. Private blockchains MUST scan locally if they want to preserve the privacy of user. Secondly, YWallet is not in the business of emulating other wallets' behavior, especially when it has a massive performance impact.
Before and after the SPAM (Jul 2022-Sep 2023), there were very few transactions per block. The SPAM increased that number 100 fold. What used to be acceptable became unusable. However, the problem was always there, and could very likely come back actually.
You can manually create an account for each shielded address that has funds, and rescan them all at once. YWallet supports importing from secret key.
YWallet only uses the primary derivation path. Your funds will always be found by other wallets. However, the inverse is not necessarily true.