I did not receive the verification email

Work through these in order — the first two explain most cases.

1. Check your spam or junk folder. Automated mail lands there often.
2. Check the address you typed. One wrong character and the mail goes to somebody else.
3. Wait five minutes. Mail is not always instant.
4. Search your whole mailbox for “Baipar” rather than scrolling the inbox.
5. Request the email again from the sign-in page.

Some company and school mail servers reject automated mail outright. Try a personal address instead. If nothing works, write to the support address on the support page — it needs no account.