1. From the home screen, tap +ADD/IMPORT
2. Tap + IMPORT WALLET
3. Choose wallet type (BCH or BTC)
4. Enter your 12-word recovery phrase (or use the File/Text tab if you have an export file)
5. Tap on ‘Show advanced options’ and scroll down to ‘Wallet Service URL’
6. For BCH multisig wallets, the required URL is https://bwscash.bitcoin.com/bws/api

If it's set to https://bch.api.wallet.bitcoin.com/bws/api or anything else please change it to the above required URL
7. For BTC wallets the required URL is https://bws.bitcoin.com/bws/api
8. Tap Import

Your multisig wallet should import.