https://www.epo.org/en/service-support/faq/law-practice/disruptions-due-covid-19-pandemic-remedies-case-non-observance-7
Does the possible excuse of delays in meeting time limits also apply to periods for paying fees in the international phase?
Yes. Fee payments in the international phase are covered by Rule 82quater.1 PCT. Delays in meeting time limits for paying fees may thus be excused based on a request under Rule 82quater.1 PCT.