sorry, I have not expressed myself clearly enough, thank you for the answer.
Fist fo all, I opened my wallet via the Brave browser. i was asked if i wanted to switch to the new version and i confirmed this. also set a new password.
When I opened the new version of the wallet, all my previously manually added coins and networks were no longer there.
i wanted to do something urgent and didn’t have time to add everything again manually. so i’m looking for a way to reopen my previous version of wallet (where everything ran without problems).
So I selected via “brave://settings/wallet”, Crypto Wallets (Deprecated)
now everything was the same and i saw all my coins as well as the other networks.
I tried to connect my wallet on https://www.bitcrush.com/ for example. However, nothing happened. For example, I can no longer connect my wallet on https://poocoin.app/ either.
Nothing happens when I try to connect, or the pop up comes up, I confirm the connection, but still nothing happens - I am not connected to the site.
The same happens, for example, at https://dashboard.surfmoon.io/.
I select the connect wallet button, pop up for the preferred wallet goes up (on this page metamask or walletconnect).I select Metamask but nothing happens.
I have another Metamask wallet via Chrome. I tried to connect the Dashboard via Chrome with the other wallet (have these coins on both wallets).
With Chrome everything goes without problems and the wallet is connected to the dashboard within seconds.
yes i use MM on Brave the whole time as my main wallet. I hope I could clear this up with the introduction
in the new version I have not done this yet, as I had switched back to the old one, as I did not have time to add everything again manually.