It's possible though I will say I get International shipments via USPS fairly often, and also ship International via USPS several times a month and have had zero problems. Yet I've had multiple issues when when DHL has been involved. It could be coincidence for sure but I don't think that lets DHL off the hook of being very difficult to contact for English speakers, particularly given their Covid tax. I don't mind paying that if I have to but the implication should be I get my packages and, if I don't, I have some means to contact them to remedy the issue. I had to go entirely through FotoImpex to find anything out on the DHL side (and FotoImpex also had trouble dealing with them too when handling my issue).
I absolutely love what Adox/FotoImpex are doing. CHS 100 is my favorite large format film, XT-3 is my favorite developer - easily better than Xtol (though 510 is starting to impress me), MCC-110 is my favorite paper, I'm super excited to try Lupex, etc. etc. - but I'll go on record as saying, so far, my worst experiences with the company happen to go through DHL. And yes, some of this salt is because that Silvermax is at the bottom of the ocean for all I know but, at best, DHL has been inconsistent before loosing my package when ordering from FI. Sometimes it was 2 weeks, sometimes 2 months (that was before the pandemic too).
Logicistics I'm sure aren't easy and I think DHL is their equivalent of USPS (though I think it's fully privatized unlike USPS). As a small business owner, I use USPS for the cost and convenience where a company like UPS is just out of reach to be cost effective for tiny ole me. So I get it, but still, it's definitely a sore point in my otherwise wonderful FI experience.