Here is a step-by-step guide to help you solve why Metamask is not appearing by calling the approved function using an ERC20 token:
Step 1: Check the Metamask Installation and Configuration
Make sure you have installed the metamask correctly on your browser. If it is installed but not enabled, try to activate it by clicking on the three points next to the Ethereum address and selecting “metamask”> “atable”.
Step 2: Confirm the Token ERC20 support
Make sure the Token ERC20 (eg ETH) supports metamask on your network. You can do this by:
one. Going to the [metamask] settings (
b. Checking the list of tokens and supported networks.
Step 3: Check that metamask is connected
Make sure the metamask is connected to your Ethereum account by:
one. Going to the [metamask] settings (
b. Ensure that the “connection wallet” (or “wallet” in older versions) is activated and configured correctly.
Step 4: Check the contract address
Make sure the contract address you are trying to call the function approve from correspondences to metamask when requested for permission:
one. Go to [metamask] ( Settings.
b. Click “Wallet”> “Connect Wallet” (or “Connect Wallet” in older versions).
w. Select your Ethereum account and click “Connect”.
d. Return to the address of the contract you are trying to call the Ize function.
Step 5: Check the functionality of Metamask
Try to activate the complete metamask functionality by:
one. Going to the [metamask] settings (
b. Selecting “Full Wallet”> “Activate Full Wallet”.
w. Click “Save”.
Step 6: Check the token balance and contract permissions
Make sure your Token ERC20 balance is sufficient for the contract call:
one. Go to [metamask] ( Settings.
b. Select the wallet you have connected earlier (for example, metamask).
w. Go to the “Balance” tab.
d. Make sure your token balance is greater or equal to the amount required for the contract call.
Step 7: Check the contract permissions
Make sure the metamask received the necessary permissions in your contract:
one. Go to [meta-concentro] ( or [EtherScan] (
b. Select your contract.
w. Click on “Permissions”> “Revoke/Repeal the permission”.
d. Make sure the metamask received the necessary permissions for the contract call.
Step 8: Check the token ERC20 metadata
Be sure to have access to Token ERC20 metadata (for example, 0x ...) in your contract code:
one. Go to [EtherScan] ( or [meta-confonctro] (
b. Select your contract.
w. Click on “token”> “metadata”.
d. Make sure the metadata is correct and include the Token ERC20 address.
Step 9: Try again
If you have completed all these steps, try to call the Metamask Function again:
one. Go to [metamask] ( Settings.
b. Select “Wallet”> “Connect Wallet” (or “Connect Wallet” in older versions).
w. Click “Save”.
d. Return to your contract address and try to call the Metamask Function.
If none of these steps solve the problem, provide more details about your configuration, including:
- The address of the specific contract you are trying to call the approved function of
- The address of the Token ERC20 provided by metamask when requested to permission
- Any error messages or logs that may be available
I hope this will help! Let you know if you have any further questions.
