I've been using Metamask in Chrome for a while and had a list of ERC20 tokens in Ropsten network already added in the Assets section through their contract addresses:
- DAI address: 0xad6d458402f60fd3bd25163575031acdce07538d
- UNI address: 0x1f9840a85d5af5bf1d1762f925bdaddc4201f984
- WETH address: 0xc778417e063141139fce010982780140aa0cd5ab
In fact, when connected to Uniswap, I can see all balances with the right amounts.
However, all these tokens have suddenly disappeared from Metamask and now I can only see ETH. If I try to manually add those tokens again (Add Token -> Custom Token -> Token Contract Address), I receive the following message:
Token has already been added.
Even after reopening Chrome or changing networks, I can't see the tokens.
Any alternative before uninstalling Metamask and importing the accounts again?