Wrong currency symbol in emails after upgrade to VM 2.6.10

[stawebnice]

Hi, I upgraded from VM 2.0.26d to 2.6.10 and now I get these issues:
1. admin and customer emails have USD symbol with correct sums in CZK, but prices and the eshop currency are CZK:
http://imtp.me/8b0l0250b.p
http://imtp.me/8b0m0250b
http://imtp.me/8b0n0250b.p

2. The shipment and payment name in emails are wrong: http://imtp.me/8b0o0250b
configuration has good names and OnePageCheckout too...

http://imtp.me/8b0p0250b
http://imtp.me/8b0q0250b

Please advise how to fix it