I specify that right before the upgrade of the wallet everything was working fine.
It's been a while ain't used this wallet but as I remember before when I was actively investing in altcoins, it seems I encountered the same as your problem. So after their system updates this is what I did, I cleared the app data and cache can help solve an issue like this, or log out of your account and uninstall the app, reinstall, and log in again. In that way, seems like you refreshing the app and your account, and their system will work well at your end.
Uninstalling and reinstalling the app this is what advised me the chatbot (powered by GPT) from their "support" but I have several tokens from blockchains or layer2 networks(Optimism, Arbitrum, Polygon, Gnosis chain,...) that I add to set up manually because there were not available and it bores me to look for their set up somewhere on internet and to enter them again while I am not sure it will solve the issue. So finally I have installed Metamask on my smartphone, set up the most important tokens I need to use on it and I'm using it through its Wallet Connect feature. They say it's an "experimental" feature but it works very well for me. I hope an update will fix those bugs soon though.