April 27 (Reuters) - PayPal Holdings Inc PYPL.O lowered its full-year profit view on Wednesday, signaling that payments volumes at the company could take a hit from surging inflation and the conflict in Ukraine. Customers in the United States have started tightening their belts in recent months as inflation surges to its highest in decades, pressuring earnings of payment processors like PayPal. The company is also expected to take a financial hit from its decision to join the Western corporate boycott of Russia over the invasion of Ukraine, which Moscow has called a "special operation."