placiibo currently only supports binaries with a size between 532 and 572 bytes and encryption keys that are 160 bytes.
Please try again with supported files.
Sadly there are some environmental circumstances that cause issues for some.
These are due to the phone having issues acquiring or maintaining a connection with the tag.
In those instances the phone could still wrongly show a checkmark to indicate success prematurely.
Some solutions that have resolved this issue for most people are:
No, placiibo currently doesn't support NDEF.
The free version of placiibo limits the number of binaries you can import into the library to two entries. If you leave a tip within the app you'll unlock placiibo+ with has no limits, removes all ads and unlocks customisation options.
Pretty much all possible errors occur because the phone wasn't able to connect to the NFC tag or lost connection during writing.
Please make sure you optimise conditions by removing the case from the phone if you're using one, making sure you use high quality NTAG215 tags with ample antenna size and you hold the tag near the iPhone's antenna.
No, placiibo is offered as is.
I've you've got any other questions, you can reach us either on Twitter through @placiiboapp or by sending an email to placiibo＠poseidondev.app