Your old transactions could be found and statements downloaded by logging in your myPOS account >> mypos.com >> Merchant account >> Accounts >> Statement >> scroll down to Inactive accounts >> choose the respective IBAN on your right >> choose the time period. Afterwards you could download a file using the Download as button.
All other transactions after migration could be downloaded through mypos.com >> Merchant accounts >> Activity.
The new statements are available again in mypos.com >> menu Merchant account >> Accounts (on your left) >> sub menu Statements (on your right).