The Brave browser with Metamask extension is not connecting to 1inch.exchange. First icon in the 'connect wallet' section is displayed as 'Web3' instead of 'Metamask'.
- open your Brave menu by clicking ≡ in the upper right corner;
- 'settings' → 'extensions' (brave://settings/extensions);
- change 'Web3 provider for using Dapps', set 'Metamask' there;
- restart the Brave browser;
- go to 1inch.exchange, click "connect wallet" and select first option 'Metamask'.