You can share your account details on three different ways: 

1. copy/paste: 
   open the account details. then press and hold e.g. the IBAN row for a while. Then choose 'Copy' and place the data where needed.
   
   
2. Share your account details via the settings:
   'Settings' > 'select credential' > 'select the account' > 'click on the share button' > send your account details, e.g. via E-Mail
   
   
3. Share your account details directly via the list of transactions: 
   'Accounts' > 'select account' > 'click on the dropdown besides the account name above the list of transactions' > 'click on the share button' > send your account details, e.g. via E-Mail