I don’t know how reliable this report is, but it might be related. Some U.S. vendors of other Chinese products were having a lot of difficulty getting shipments until about a month or two ago.
Major Cities in China’s Guangdong Province Hit by Resurgence of COVID-19 Despite Draconian Lockdown Measures
Epoch Times ^ | 06/21/2021 | Nicole Hao
https://freerepublic.com/focus/f-news/3969812/posts
https://www.theepochtimes.com/major-cities-in-chinas-guangdong-hit-by-resurgence-of-covid-19-despite-draconian-lockdown-measures_3866700.html
“Business owners were frustrated because cargo ships aren’t allowed to enter or leave the harbors and products can’t be unloaded, including some perishable items.”
CoupFlu, my derriere.