Over-the-counter (OTC) stocks - basic questions

Hello!

I’m new to investing and have a couple of questions regarding OTC:

  1. Can OTC stocks in a pie be bought as fractional shares, or only whole shares?
  2. Any concerns when creating a pie with 20-30 OTC stocks?
  3. Are dividends in foreign currencies like Danish Krone or Japanese Yen, for example, automatically converted to GBP (or EUR for European users)?

Any tips, experiences, or suggestions are welcome! I hope the answers will also help other Trading 212 users.

Cheers!

T